@Book{CLR90, author = { Thomas H. Cormen and Charles E. Leiserson and Ronald L. Rivest }, title = { Introduction to Algorithms }, publisher = { MIT Press and McGraw Hill }, OPTyear = { 1990 }, OPTmonth = { June 25, }, date = { 1990-06-25 }, series = { MIT Electrical Engineering and Computer Science }, edition = { First edition }, }