Zogaj, S. & Bretschneider, U.: Crowdtesting with testCloud – Managing the Challenges of an Intermediary. European Conference on Information Systems (ECIS 2013). Utrecht, Netherlands (accepted for publication): 2013

Bretschneider, U.; Zogaj, S. & Leimeister, J.: Wettbewerb vs. Kollaboration: Wie verhalten sich Teilnehmer in Ideenwettbewerben und Ideen Communities?. VHB Jahrestagung 2012. Bozen/Bolzano, Italy: 2012
[Volltext]

Kipp, P.; Zogaj, S.; Ebel, P.; Bretschneider, U. & Leimeister, J. M.: Introducing Open Innovation to Universities - How to Increase Universities Innovativeness. International Society for Professional Innovation Management (ISPIM). Barcelona, Spain: 2012
[Volltext]

Zogaj, S. & Bretschneider, U.: Customer Integration in New Product Development: A Literature Review Concerning the Appropriateness of Different Customer Integration Methods to Attain Customer Knowledge. Proceedings of the 20th European Conference on Information Systems (ECIS). Barcelona, Spain: 2012
[Volltext]

Zogaj, S.; Kipp, P.; Ebel, P.; Bretschneider, U. & Leimeister, J. M.: Towards Open Innovation In Universities: Fostering the Inside-Out-Process Using Ideas Competitions. European Academy of Management Conference (EURAM). Rotterdam, Netherlands: 2012
[Volltext]