id: 70325363 dt: a an: 70325363 au: Xie, Haihua; Liu, Lin; Yang, Jingwei ti: $i*-prefer$: optimizing requirements elicitation process based on actor preferences so: SAC, 347-354 (2009). py: 2009 pu: la: EN cc: ut: ci: li: doi:10.1145/1529282.1529359