author = { Van Beek, Peter AND Cohen, Robin },

title = { Exact and approximate reasoning about temporal relations1 },

publisher = {Wiley},

isbn = {0824-7935},

isbn = {1467-8640},

keywords = { Artificial Intelligence , Computational Mathematics },

year = {1990},

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