MuPSi - a multitouch Petri net simulator for transition steps. - Thomas Irgang; Andreas Harrer; Robin Bergenthum (PNSE, 2012)

SoCCR - Optimistic Concurrency Control for the Web-Based Collaborative Framework Metafora. - Andreas Harrer; Thomas Irgang; Norbert Sattes; Kerstin Pfahler (CRIWG, 2012)

The Metafora Design Principles for a Collaborative, Interoperable Learning Framework. - Andreas Harrer; Thomas Irgang; Andreas Lingnau; Norbert Sattes; Kerstin Pfahler (CRIWG, 2013)

Kollaboratives Planen und Lernen mit der web-basierten Lernplattform Metafora. - Andreas Harrer; Kerstin Pfahler; Andreas Lingnau; Vanessa Herbst; Norbert Sattes; Thomas Irgang (DeLFI, 2013)

Visual Language Plans - Formalization of a Pedagogical Learnflow Modeling Language. - Kerstin Irgang; Thomas Irgang (PNSE @ Petri Nets, 2014)

Folding Example Runs to a Workflow Net. - Robin Bergenthum; Thomas Irgang; Benjamin Meis (ATAED@Petri Nets/ACSD, 2015)