Evaluation of the Goal-Oriented Requirements Engineering Method KAOS. - Frank Zickert (AMCIS, 2010)

Assessing Project Effort in Requirements Engineering: A Report on Design Research in Progress. - Frank Zickert; Roman Beck (DESRIST, 2010)

Because Effort Matters! - Frank Zickert; Roman Beck (Bus. Inf. Syst. Eng., 2010)

Analysis of Two Theoretical Perspectives on Information Systems Development: Towards an Integrated Perspective. - Frank Zickert (Wirtschaftsinformatik, 2011)

Coping with Existing Systems in Information Systems Development. - Frank Zickert; Roman Beck (IEEE Trans. Software Eng., 2012)

Assessing project effort from software requirements. - Frank Zickert (2012)

A mapping model for assessing project effort from requirements. - Frank Zickert; Roman Beck (Inf. Syst. E Bus. Manag., 2013)