PT Unknown AU Knapper, R Flath, CM Blau, B Sailer, A Weinhardt, C TI A multi-attribute service portfolio design problem SE Proceedings / IEEE International Conference on Service-Oriented Computing and Applications (SOCA), Irvine, CA, USA, December 12-14, 2011 PY 2011 BP 1 EP 7 DI 10.1109/SOCA.2011.6166207 LA english ER