author = { Ritter, Lois A. AND Sue, Valerie M. },

title = { Case studies },

publisher = {Wiley},

isbn = {1534-875X},

isbn = {1097-6736},

keywords = { Management Science and Operations Research , Strategy and Management , Education },

year = {2007},

url = { http://slubdd.de/katalog?TN_libero_mab2 }