Uniform random generation of expressions respecting algebraic identities. - Walter J. Gutjahr (Computing, 1991)

The asymptotic distribution of leaf heights in binary trees. - Walter J. Gutjahr; Georg Ch. Pflug (Graphs Comb., 1992)

The limiting common distribution of two leaf heights in a random brinary tree. - Walter J. Gutjahr; Georg Ch. Pflug (RAIRO Theor. Informatics Appl., 1992)

The Variance of Level Numbers in Certain Families of Trees. - Walter J. Gutjahr (Random Struct. Algorithms, 1992)

Automatische Testdatengenerierung zur Unterstützung des Softwaretests. - Walter J. Gutjahr (Inform. Forsch. Entwickl., 1993)

Expectation Transfer between Branching Processes and Random Trees. - Walter J. Gutjahr (Random Struct. Algorithms, 1993)

A global optimization problem in series-parallel networks with maximum reliability. - Walter J. Gutjahr (J. Glob. Optim., 1994)

Connection Reliabilities in Stochastic Acyclic Networks. - Walter J. Gutjahr (Random Struct. Algorithms, 1994)

Optimal Test Distributions for Software Failure Cost Estimation. - Walter J. Gutjahr (IEEE Trans. Software Eng., 1995)

Failure Risk Estimation via Markov Software Usage Models. - Walter J. Gutjahr (SAFECOMP, 1996)

Simulated Annealing for noisy cost functions. - Walter J. Gutjahr; Georg Ch. Pflug (J. Glob. Optim., 1996)

An improved algorithm for finding minimum-risk 3-state-device networks. - Walter J. Gutjahr; Ch. E. Wöber (Int. J. Comput. Math., 1997)

Task Assignment in Cayley Interconnection Topologies. - Walter J. Gutjahr; Martin Hitz; Thomas A. Mück (Parallel Comput., 1997)

Reliability optimization of redundant software with correlated failures. - Walter J. Gutjahr (ISSRE, 1998)

Optimal stochastic single-machine-tardiness scheduling by stochastic branch-and-bound. - Walter J. Gutjahr; A. Hellmayr; Georg Ch. Pflug (Eur. J. Oper. Res., 1999)

Partition Testing vs. Random Testing: The Influence of Uncertainty. - Walter J. Gutjahr (IEEE Trans. Software Eng., 1999)

Crashing of stochastic processes by sampling and optimisation. - Walter J. Gutjahr; Christine Strauss; Martin Tóth (Bus. Process. Manag. J., 2000)

A Graph-based Ant System and its convergence. - Walter J. Gutjahr (Future Gener. Comput. Syst., 2000)

A Stochastic Branch-and-Bound Approach to Activity Crashing in Project Management. - Walter J. Gutjahr; Christine Strauss; Eric W. Wagner (INFORMS J. Comput., 2000)

Representation and optimization of software usage models with non-Markovian state transitions. - Karl Doerner; Walter J. Gutjahr (Inf. Softw. Technol., 2000)

Software dependability evaluation based on Markov usage models. - Walter J. Gutjahr (Perform. Evaluation, 2000)

Influence Of Team Size And Defect Detection Technique On Inspection Effectiveness. - Stefan Biffl; Walter J. Gutjahr (IEEE METRICS, 2001)

A reliability model for nonhomogeneous redundant software versions with correlated failures. - Walter J. Gutjahr (Comput. Syst. Sci. Eng., 2001)

A branch-and-bound approach to the optimization of redundant software under failure correlation. - Walter J. Gutjahr; Gabriele Uchida (Comput. Oper. Res., 2002)

Using a Reliability Growth Model to Control Software Inspection. - Stefan Biffl; Walter J. Gutjahr (Empir. Softw. Eng., 2002)

ACO algorithms with guaranteed convergence to the optimal solution. - Walter J. Gutjahr (Inf. Process. Lett., 2002)

Extracting Test Sequences from a Markov Software Usage Model by ACO. - Karl Doerner; Walter J. Gutjahr (GECCO, 2003)

A Converging ACO Algorithm for Stochastic Combinatorial Optimization. - Walter J. Gutjahr (SAGA, 2003)

An ant system approach to Markov decision processes. - Hyeong Soo Chang; Walter J. Gutjahr; Jihoon Yang; Sungyong Park (ACC, 2004)

S-ACO: An Ant-Based Approach to Combinatorial Optimization Under Uncertainty. - Walter J. Gutjahr (ANTS Workshop, 2004)

Pareto Ant Colony Optimization: A Metaheuristic Approach to Multiobjective Portfolio Selection. - Karl F. Doerner; Walter J. Gutjahr; Richard F. Hartl; Christine Strauss; Christian Stummer (Ann. Oper. Res., 2004)

Two Metaheuristics for Multiobjective Stochastic Combinatorial Optimization. - Walter J. Gutjahr (SAGA, 2005)

Interaction dynamics of two reinforcement learners. - Walter J. Gutjahr (Central Eur. J. Oper. Res., 2006)

Pareto ant colony optimization with ILP preprocessing in multiobjective project portfolio selection. - Karl F. Doerner; Walter J. Gutjahr; Richard F. Hartl; Christine Strauss; Christian Stummer (Eur. J. Oper. Res., 2006)

Enriched workflow modelling and Stochastic Branch-and-Bound. - Karl F. Doerner; Walter J. Gutjahr; Gabriele Kotsis; Martin Polaschek; Christine Strauss (Eur. J. Oper. Res., 2006)

A VNS Algorithm for Noisy Problems and Its Application to Project Portfolio Analysis. - Walter J. Gutjahr; Stefan Katzensteiner; Peter Reiter (SAGA, 2007)

Combined Discrete-event Simulation and Ant Colony Optimisation Approach for Selecting Optimal Screening Policies for Diabetic Retinopathy. - Sally C. Brailsford; Walter J. Gutjahr; Marion S. Rauner; Wolfgang Zeppelzauer (Comput. Manag. Sci., 2007)

An ACO algorithm for a dynamic regional nurse-scheduling problem in Austria. - Walter J. Gutjahr; Marion S. Rauner (Comput. Oper. Res., 2007)

Multicriteria tour planning for mobile healthcare facilities in a developing country. - Karl Doerner; Axel Focke; Walter J. Gutjahr (Eur. J. Oper. Res., 2007)

Mathematical runtime analysis of ACO algorithms: survey on an emerging issue. - Walter J. Gutjahr (Swarm Intell., 2007)

Competence-driven project portfolio selection, scheduling and staff assignment. - Walter J. Gutjahr; Stefan Katzensteiner; Peter Reiter; Christian Stummer; Michaela Denk (Central Eur. J. Oper. Res., 2008)

First steps to the runtime complexity analysis of ant colony optimization. - Walter J. Gutjahr (Comput. Oper. Res., 2008)

Search-based software engineering. - Walter J. Gutjahr; Mark Harman (Comput. Oper. Res., 2008)

A provably convergent heuristic for stochastic bicriteria integer programming. - Walter J. Gutjahr (J. Heuristics, 2009)

A multicriteria Decision Support System for Competence-Driven Project Portfolio Selection. - Christian Stummer; Elmar Kiesling; Walter J. Gutjahr (Int. J. Inf. Technol. Decis. Mak., 2009)

A survey on metaheuristics for stochastic combinatorial optimization. - Leonora Bianchi; Marco Dorigo; Luca Maria Gambardella; Walter J. Gutjahr (Nat. Comput., 2009)

Multi-criteria location planning for public facilities in tsunami-prone coastal areas. - Karl F. Doerner; Walter J. Gutjahr; Pamela C. Nolz (OR Spectr., 2009)

Multi-objective decision analysis for competence-oriented project portfolio selection. - Walter J. Gutjahr; Stefan Katzensteiner; Peter Reiter; Christian Stummer; Michaela Denk (Eur. J. Oper. Res., 2010)

Dynamic Policy Modeling for Chronic Diseases: Metaheuristic-Based Identification of Pareto-Optimal Screening Strategies. - Marion S. Rauner; Walter J. Gutjahr; Kurt Heidenberger; Joachim Wagner 003; Joseph M. Pasia (Oper. Res., 2010)

Convergence Analysis of Metaheuristics. - Walter J. Gutjahr (Matheuristics, 2010)

A Bi-objective Metaheuristic for Disaster Relief Operation Planning. - Pamela C. Nolz; Karl F. Doerner; Walter J. Gutjahr; Richard F. Hartl (Advances in Multi-Objective Nature Inspired Computing, 2010)

Ant Colony Optimization: Recent Developments in Theoretical Analysis. - Walter J. Gutjahr (Theory of Randomized Search Heuristics, 2011)

Recent trends in metaheuristics for stochastic combinatorial optimization. - Walter J. Gutjahr (Central Eur. J. Comput. Sci., 2011)

Special issue on optimization in disaster relief. - Karl F. Doerner; Walter J. Gutjahr; Luk N. Van Wassenhove (OR Spectr., 2011)

Optimal dynamic portfolio selection for projects under a competence development model. - Walter J. Gutjahr (OR Spectr., 2011)

A Three-Objective Optimization Approach to Cost Effectiveness Analysis Under Uncertainty. - Walter J. Gutjahr (OR, 2012)

Exact hybrid algorithms for solving a bi-objective vehicle routing problem. - Peter Reiter; Walter J. Gutjahr (Central Eur. J. Oper. Res., 2012)

The bi-objective stochastic covering tour problem. - Fabien Tricoire; Alexandra Graf; Walter J. Gutjahr (Comput. Oper. Res., 2012)

Runtime Analysis of an Evolutionary Algorithm for Stochastic Multi-Objective Combinatorial Optimization. - Walter J. Gutjahr (Evol. Comput., 2012)

A math-heuristic for the warehouse location-routing problem in disaster relief. - Stefan Rath; Walter J. Gutjahr (Comput. Oper. Res., 2014)

Using Indifference Information in Robust Ordinal Regression. - Jürgen Branke; Salvatore Corrente; Salvatore Greco; Walter J. Gutjahr (EMO (2), 2015)

Bi-Objective Multi-Mode Project Scheduling Under Risk Aversion. - Walter J. Gutjahr (Eur. J. Oper. Res., 2015)

Stochastic multi-objective optimization: a survey on non-scalarizing methods. - Walter J. Gutjahr; Alois Pichler (Ann. Oper. Res., 2016)

Multicriteria optimization in humanitarian aid. - Walter J. Gutjahr; Pamela C. Nolz (Eur. J. Oper. Res., 2016)

Bi-objective stochastic programming models for determining depot locations in disaster relief operations. - Stefan Rath; Michel Gendreau; Walter J. Gutjahr (Int. Trans. Oper. Res., 2016)

Modelling beneficiaries' choice in disaster relief logistics. - Christian Burkart; Pamela C. Nolz; Walter J. Gutjahr (Ann. Oper. Res., 2017)

Efficient pairwise preference elicitation allowing for indifference. - Jürgen Branke; Salvatore Corrente; Salvatore Greco; Walter J. Gutjahr (Comput. Oper. Res., 2017)

Equity and deprivation costs in humanitarian logistics. - Walter J. Gutjahr; Sophie Fischer (Eur. J. Oper. Res., 2018)

Uncertainty, economics and optimization: recent developments. - Walter J. Gutjahr; Alois Pichler (Comput. Manag. Sci., 2019)

Inequity-averse shelter location for disaster preparedness. - Mahdi Mostajabdaveh; Walter J. Gutjahr; F. Sibel Salman (IISE Trans., 2019)

Stochastic project management: multiple projects with multi-skilled human resources. - Thomas Felberbauer; Walter J. Gutjahr; Karl F. Doerner (J. Sched., 2019)

Bi-objective facility location in the presence of uncertainty. - Najmesadat Nazemi; Sophie N. Parragh; Walter J. Gutjahr (CoRR, 2020)

Innovative approaches in humanitarian operations. - Walter J. Gutjahr; Nilay Noyan; Nico Vandaele; Luk N. Van Wassenhove (OR Spectr., 2020)

Inequity-averse stochastic decision processes. - Walter J. Gutjahr (Eur. J. Oper. Res., 2021)

Bi-objective Risk-averse Facility Location using a Subset-based Representation of the Conditional Value-at-Risk. - Najmesadat Nazemi; Sophie N. Parragh; Walter J. Gutjahr (ICORES, 2022)

Bi-objective facility location under uncertainty with an application in last-mile disaster relief. - Najmesadat Nazemi; Sophie N. Parragh; Walter J. Gutjahr (Ann. Oper. Res., 2022)

Stochastic radiotherapy appointment scheduling. - Roland Braune; Walter J. Gutjahr; Petra Vogl (Central Eur. J. Oper. Res., 2022)

A branch-and-Benders-cut algorithm for a bi-objective stochastic facility location problem. - Sophie N. Parragh; Fabien Tricoire; Walter J. Gutjahr (OR Spectr., 2022)

Risk-Averse Bargaining in a Stochastic Optimization Context. - Walter J. Gutjahr; Raimund M. Kovacevic; David Wozabal (Manuf. Serv. Oper. Manag., 2023)

A branch-and-price algorithm for fast and equitable last-mile relief aid distribution. - Mahdi Mostajabdaveh; F. Sibel Salman; Walter J. Gutjahr (Eur. J. Oper. Res., 2025)