Requirements engineering: foundation for software quality : 21st international working conference, REFSQ 2015 : Essen, Germany, March 23-26, 2015 : proceedings. (Lecture Notes in Computer Science ; 9013)
Requirements engineering: foundation for software quality : 21st international working conference, REFSQ 2015 : Essen, Germany, March 23-26, 2015 : proceedings.