Designing Platforms for Crowd-based Software Prototype Validation: A Design Science Study
S. Gottschalk, S. Parvez, E. Yigitbas, G. Engels, in: Product-Focused Software Process Improvement - 23rd International Conference, PROFES 2022, Jyväskylä, Finland, Proceedings , 2022.

Extending Business Model Development Tools with Consolidated Expert Knowledge 
S. Gottschalk, J. Kirchhoff, G. Engels, in: B. Shishkov (Ed.), Business Modeling and Software Design, 2021.

Von datenbasierter zu datengetriebener Geschäftsmodellentwicklung: Ein Überblick über Software-Tools  und deren Datennutzung
S. Gottschalk, E. Yigitbas, Von datenbasierter zu datengetriebener Geschäftsmodellentwicklung: Ein Überblick über Software-Tools  und deren Datennutzung, Gesellschaft für Informatik, 2021.

Distributed merchandise management system
T. Göllner, J.-H. Schwarz, S. Gottschalk, S. Sauer, (2021).

Situation-specific Business Model Development Methods for Mobile App Developers
S. Gottschalk, E. Yigitbas, A. Nowosad, G. Engels, in: Enterprise, Business-Process and Information Systems Modeling, Springer, 2021.

Situation-specific Development of Business Models for Services in Software Ecosystems
S. Gottschalk, in: Advanced Software Engineering. Doctorial Consortium, CEUR, 2021.

Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems 
C. Vorbohle, S. Gottschalk, in: Proceedings of the 29th European Conference on Information Systems (ECIS), AIS, n.d.

Design Principles for a Crowd-Based Prototype Validation Platform
S. Gottschalk, M.S. Aziz, E. Yigitbas, G. Engels, in: X. Wang, A. Martini, A. Nguyen-Duc, V. Stray (Eds.), Software Business - 12th International Conference, ICSOB 2021, Drammen, Norway, December 2-3, 2021, Proceedings, Springer, 2021, pp. 205–220.

Situation- and  Domain-specific Composition and Enactment of Business Model Development Methods
S. Gottschalk, E. Yigitbas, A. Nowosad, G. Engels, in: Product-Focused Software Process Improvement, Springer, 2021.

A Procedure Model for Enhancing Ideation in the Collaborative Development of Business Ecosystems
C. Vorbohle, S. Gottschalk, D. Kundisch, G. Engels, N. Wünderlich, in: Tagungsband Der Contribution at: 17. Internationale Tagung Wirtschaftsinformatik 2022 (WI), 2021.

VREUD - An End-User Development Tool to Simplify the Creation of Interactive VR Scenes
E. Yigitbas, J. Klauke, S. Gottschalk, G. Engels, in: Proceedings of the 2021 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC) , IEEE, 2021.

ProConAR: A Tool Support for Model-based AR Product Configuration
S. Gottschalk, E. Yigitbas, E. Schmidt, G. Engels, in: R. Bernhaupt, C. Ardito, S. Sauer (Eds.), Human-Centered Software Engineering. HCSE 2020, Springer, Cham, 2020.

Model-based Product Configuration in Augmented Reality Applications
S. Gottschalk, E. Yigitbas, E. Schmidt, G. Engels, in: R. Bernhaupt, C. Ardito, S. Sauer (Eds.), Human-Centered Software Engineering. HCSE 2020, Springer, Cham, 2020.

Hypothesis-driven Adaptation of Business Models based on Product Line Engineering
S. Gottschalk, F. Rittmeier, G. Engels, in: Proceedings of the 22nd IEEE International Conference on Business Informatics, IEEE, 2020.

Model-based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs
S. Gottschalk, E. Yigitbas, G. Engels, in: B. Shishkov (Ed.), Business Modeling and Software Design, Springer International Publishing, 2020, pp. 276–286.

Business Models of Store-Oriented Software Ecosystems: A Variability Modeling Approach
S. Gottschalk, F. Rittmeier, G. Engels, in: B. Shishkov (Ed.), Business Modeling and Software Design, Springer International Publishing, 2019, pp. 153–169.

Verteiltes Warenwirtschaftssystem [Distributed Warehouse System]
T. Göllner, J.-H. Schwarz, S. Gottschalk, S. Sauer, (2019).

Intertwined Development of Business Model and Product Functions for Mobile Applications: A Twin Peak Feature Modeling Approach
S. Gottschalk, F. Rittmeier, G. Engels, in: S. Hyrynsalmi, M. Suoranta, A. Nguyen-Duc, P. Tyrväinen, P. Abrahamsson (Eds.), Software Business, Springer International Publishing, Cham, 2019, pp. 192–207.