1 Erratum to: Requirements Eng DOI 10.1007/s00766-013-0180-9

Unfortunately, in the original publication, the fourth author’s name (Vijayan Sugumara) and affiliation of all authors have been published incorrectly. The acknowledgment section was also missed.

The correct name of the fourth author is Vijayan Sugumaran. The correct affiliation of all authors and the acknowledgment section are given below.