Data warehouses-TOLAP-decision making. - Panagiotis Chountas; Christos Vasilakis; Elia El-Darzi; Ilias Petrounias; Andy Tseng (SMC, 2003)

On Uncertainty and Data-Warehouse Design. - Panagiotis Chountas; Ilias Petrounias; Christos Vasilakis; Andy Tseng; Elia El-Darzi; Krassimir T. Atanassov; Vassilis S. Kodogiannis (ADVIS, 2004)

Comparative Analysis of Data Mining Algorithms for Predicting Inpatient Length of Stay. - Peng Liu; Elia El-Darzi; Christos Vasilakis; Panagiotis Chountas; Wei Huang 018; Lei Lei (PACIS, 2004)

A Data Warehouse Environment for Storing and Analyzing Simulation Output Data. - Christos Vasilakis; Elia El-Darzi; Panagiotis Chountas (WSC, 2004)

An Analysis of Missing Data Treatment Methods and Their Application to Health Care Dataset. - Peng Liu; Elia El-Darzi; Lei Lei; Christos Vasilakis; Panagiotis Chountas; Wei Huang 018 (ADMA, 2005)

Modelling nationwide hospital length of stay: opening the black box. - Christos Vasilakis; Adele H. Marshall (J. Oper. Res. Soc., 2005)

Generalized Net Model for Outpatient Care in Bulgaria. - Violeta Tasseva; Desislava Peneva; Krassimir T. Atanassov; Elia El-Darzi; Panagiotis Chountas; Christos Vasilakis (CBMS, 2007)

A simulation study of scheduling clinic appointments in surgical care: individual surgeon versus pooled lists. - Christos Vasilakis; Boris G. Sobolev; L. Kuramoto; A. R. Levy (J. Oper. Res. Soc., 2007)

A Gaussian Mixture Model Approach to Grouping Patients According to their Hospital Length of Stay. - Revlin Abbi; Elia El-Darzi; Christos Vasilakis; Peter H. Millard (CBMS, 2008)

Application of Unified Modelling Language (UML) to the Modelling of Health Care Systems: An Introduction and Literature Survey. - Christos Vasilakis; Dorota Lecnzarowicz; Chooi Lee (Int. J. Heal. Inf. Syst. Informatics, 2008)

Applying data mining algorithms to inpatient dataset with missing values. - Peng Liu; Elia El-Darzi; Lei Lei; Christos Vasilakis; Panagiotis Chountas; Wei Huang 018 (J. Enterp. Inf. Manag., 2008)

A Decision Support System for Measuring and Modelling the Multi-Phase Nature of Patient Flow in Hospitals. - Christos Vasilakis; Elia El-Darzi; Panagiotis Chountas (Intelligent Techniques and Tools for Novel System Architectures, 2008)

Developing model requirements for patient flow simulation studies using the Unified Modelling Language (UML). - Christos Vasilakis; D. Lecznarowicz; Chooi Lee (J. Simulation, 2009)

A participative modelling framework for developing conceptual models in healthcare simulation studies. - Antuela A. Tako; Christos Vasilakis; Kathy Kotiadis (WSC, 2010)

Systematic Review of the Use of Computer Simulation Modeling of Patient Flow in Surgical Care. - Boris G. Sobolev; Victor Sanchez; Christos Vasilakis (J. Medical Syst., 2011)

Using a model of the performance measures in Soft Systems Methodology (SSM) to take action: a case study in health care. - Kathy Kotiadis; Antuela A. Tako; Etiënne A. J. A. Rouwette; Christos Vasilakis; J. Brennan; P. Gandhi; H. Wegstapel; F. Sagias; P. Webb (J. Oper. Res. Soc., 2013)

Modelling toolkit to assist with introducing a stepped care system design in mental health care. - Christos Vasilakis; Christina Pagel; Steve Gallivan; David A. Richards; Alice Weaver; Martin Utley (J. Oper. Res. Soc., 2013)

Examining the feasibility of using a modelling tool to assess resilience across a health-care system and assist with decisions concerning service reconfiguration. - Sonya Crowe; Christos Vasilakis; Andrew Skeen; Phil Storr; Peter Grove; Steve Gallivan; Martin Utley (J. Oper. Res. Soc., 2014)

A participative and facilitative conceptual modelling framework for discrete event simulation studies in healthcare. - Kathy Kotiadis; Antuela A. Tako; Christos Vasilakis (J. Oper. Res. Soc., 2014)

Informing the management of pediatric heart transplant waiting lists: complementary use of simulation and analytical modeling. - Sonya Crowe; Steve Gallivan; Christos Vasilakis; Catherine Bull; Matthew Fenton (WSC, 2015)

Development of a discrete event simulation model for evaluating strategies of red blood cell provision following mass casualty events. - Simon M. Glasgow; Zane B. Perkins; Nigel R. M. Tai; Karim Brohi; Christos Vasilakis (Eur. J. Oper. Res., 2018)

An open source decision support system for facility location analysis. - Günes Erdogan; Neophytos Stylianou; Christos Vasilakis (Decis. Support Syst., 2019)

A Demand and Capacity Model For Home-Based Intermediate Care: Optimizing The 'Step Down' Pathway. - Alison Harper; Martin Pitt; Manon De Prez; Zehra Önen Dumlu; Christos Vasilakis; Paul Forte; Richard M. Wood (WSC, 2021)

Visualizing Opioid-Use Variation in a Pediatric Perioperative Dashboard. - Conrad W. Safranek; Lauren E. Feitzinger; Alice Kate Cummings Joyner; Nicole Woo; Virgil Smith; Elizabeth De Souza; Christos Vasilakis; Thomas Anthony Anderson; James Fehr; Andrew Young Shin; David Scheinker; Ellen Wang; et al. (Appl. Clin. Inform., 2022)

Developing and validating a predictive model for future emergency hospital admissions. - Neophytos Stylianou; Jason Young; Carol J. Peden; Christos Vasilakis (Health Informatics J., 2022)

Evaluating the sustainability of complex health system transformation in the context of population ageing: An empirical system dynamics study. - Gozdem Dural Selcuk; Christos Vasilakis (J. Oper. Res. Soc., 2023)

Improving uptake of simulation in healthcare: User-driven development of an open-source tool for modelling patient flow. - Joshua MB Tyler; Ben J. Murch; Christos Vasilakis; Richard M. Wood (J. Simulation, 2023)

Operational Research: methods and applications. - Fotios Petropoulos; Gilbert Laporte; Emel Aktas; Sibel A. Alumur; Claudia Archetti; Hayriye Ayhan; Maria Battarra; Julia A. Bennell; Jean-Marie Bourjolly; John E. Boylan; Michèle Breton; David Canca; et al. (J. Oper. Res. Soc., 2024)