- Raimundas Matulevicius, Thorsten Weyer, Peter Forbrig, Andrea Herrmann, Maya Daneva, Joerg Doerr, Anne Hoffmann, Axel Kalenborn, Marcus Trapp, Georg Herzwurm, Wolfram Pietsch, Annika Lenz, Sixten Schockert, Marian Daun, Cristina Palomares, Itzel Morales-Ramirez, Bastian Tenbergen, Barbara Paech, Roel Wieringa, Eric Knauss, Anna Perini, editors, Joint Proceedings of REFSQ-2015 Workshops, Research Method Track, and Poster Track co-located with the 21st International Conference on Requirements Engineering: Foundation for Software Quality (REFSQ 2015), Essen, Germany, March 23, 2015. Volume 1342 of CEUR Workshop Proceedings, CEUR-WS.org, 2015.
- Samuel A. Fricker, Kurt Schneider, editors, Requirements Engineering: Foundation for Software Quality - 21st International Working Conference, REFSQ 2015, Essen, Germany, March 23-26, 2015. Proceedings. Volume 9013 of Lecture Notes in Computer Science, Springer, 2015.