author = { Refsdal, Sjur AND Kayser, Rainer },

title = { Some Remarks on Gravitational Micro-Lensing },

publisher = {Cambridge University Press (CUP)},

isbn = {0074-1809},

keywords = { General Earth and Planetary Sciences , General Engineering , General Environmental Science },

year = {1989},

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