author = { Jennison, Christopher AND Turnbull, Bruce W. },

title = { Mid‐course sample size modification in clinical trials based on the observed treatment effect },

publisher = {Wiley},

isbn = {0277-6715},

isbn = {1097-0258},

year = {2003},

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