PaaS - black or white: an investigation into software development model for building retail industry SaaS. - Vu Viet Hoang Pham; Xiao Liu 004; Xi Zheng 001; Min Fu 001; Sahil Vikas Deshpande; Weidong Xia; Roger Zhou; Mohamed Abdelrazek 001 (ICSE (Companion Volume), 2017)