TimeNETMS-an integrated modeling and performance evaluation tool for manufacturing systems. - Armin Zimmermann; Jörn Freiheit (SMC, 1998)

Petri Net Modelling and Performability Evaluation with TimeNET 3.0. - Armin Zimmermann; Jörn Freiheit; Reinhard German; Günter Hommel (Computer Performance Evaluation / TOOLS, 2000)

Discrete Time Stochastic Petri Nets for the Modeling and Evaluation of Real-Time Systems. - Armin Zimmermann; Jörn Freiheit; Günter Hommel (IPDPS, 2001)

A Divide and Conquer Approach for the Performance Evaluation of Large Stochastic Petri Nets. - Jörn Freiheit; Armin Zimmermann (PNPM, 2001)

Novel Formulae for GSPN Aggregation. - Jörn Freiheit; Armin Heindl (MASCOTS, 2002)

Modelling and evaluation of time aspects in business processes. - Juliane Dehnert; Jörn Freiheit; Armin Zimmermann (J. Oper. Res. Soc., 2002)

Matrizen- und zustandsraumreduzierende Verfahren zur Leistungsbewertung großer stochastischer Petrinetze. - Jörn Freiheit (2002)

New Developments in Closed-Form Computation for GSPN Aggregation. - Jörn Freiheit; Jonathan Billington (ICFEM, 2003)

Using TimeNET to Evaluate Operational Planning Processes. - Jörn Freiheit; Jonathan Billington (Business Process Management, 2004)

On the semantics of EPCs: Faster calculation for EPCs with small state spaces. - Nicolas Cuntz; Jörn Freiheit; Ekkart Kindler (EPK, 2005)

Enhanced Workflow Models as a Tool for Judicial Practitioners. - Jörn Freiheit; Susanne Münch; Hendrik Schöttle; Grozdana Sijanski; Fabrice Zangl (OTM Workshops, 2005)

Using BPEL Processes defined by Event-driven Process Chains. - Carlo Simon; Jörn Freiheit; Sebastian Olbrich (EPK, 2006)

Approximate closed-form aggregation of a fork-join structure in generalised stochastic petri nets. - Nimrod Lilith; Jonathan Billington; Jörn Freiheit (VALUETOOLS, 2006)

Modelling of Cross-Organizational Business Processes. - Jörg Ziemann; Thomas Matheis; Jörn Freiheit (EMISA, 2007)

Modelling of Cross-Organizational Business Processes - Current Methods and Standards. - Jörg Ziemann; Thomas Matheis; Jörn Freiheit (Enterp. Model. Inf. Syst. Archit. Int. J. Concept. Model., 2007)

Sicherheitseigenschaften neuerer Systeme zur E-Mail-Kommunikation zwischen Bürgern und Behörden. - Jörn Freiheit (FTVI/FTRI, 2012)

Collaborative Environmental Data Management Framework for Microsoft Excel. - Jörn Freiheit; Ramona Goerner; Jost Becker; Frank Fuchs-Kittowski (EnviroInfo, 2014)

Projekte in der Wirtschaft. - Juliane Siegeris; Jörn Freiheit (SEUH, 2015)

Arbeitsprozess-integriertes Projekt- Studium in Unternehmen. - Frank Fuchs-Kittowski; Jörn Freiheit; Juliane Siegeris (SEUH, 2017)

A Concept for Comprehensive IT Support for Environmental and Energy Management in SMEs. - Anna O'Faoláin de Bhróithe; Frank Fuchs-Kittowski; Jörn Freiheit; Detlef Hüttemann; Stefan Voigt; Thomas Dinkel (ICEIS (2), 2018)

A Generic Approach to Schema Evolution in Live Relational Databases. - Anna O'Faoláin de Bhróithe; Fritz Heiden; Alena Schemmert; Dschialin Phan; Lillian Hung; Jörn Freiheit; Frank Fuchs-Kittowski (ISAT (1), 2019)

Evaluation des Arbeitsprozess-integrierten Projektstudiums (Evaluation of Project Studies Integrated into the Working Processes of Companies). - Frank Fuchs-Kittowski; Juliane Siegeris; Jörn Freiheit (SEUH, 2019)

Agiles Vorgehen im BEMpsy-Projekt - ScrumBan im Spannungsfeld einer multidisziplinären Produkt-Entwicklung. - Brit Leissler; Juliane Siegeris; Jörn Freiheit (UP, 2022)