.Requirements engineering : foundation for software quality : 15th international working conference, REFSQ 2007, Amsterdam, the Netherlands, June 2009 : proceedings /.,.
Requirements engineering : foundation for software quality : 15th international working conference, REFSQ 2007, Amsterdam, the Netherlands, June 2009 : proceedings /
.Requirements engineering : foundation for software quality : 13th international working conference, REFSQ 2007, Trondheim, Norway, June 11-12, 2007 : proceedings /.,.
Requirements engineering : foundation for software quality : 13th international working conference, REFSQ 2007, Trondheim, Norway, June 11-12, 2007 : proceedings /