@BOOK{ Book!D - 101002560,
AUTHOR = "/ Hongwei Chen.,Chen, Hongwei,",
TITLE = "Monthly problem gems",
LIBRARY= "كتابخانه پردیس علوم (دانشگاه تهران)",
SUBJECT = "Mathematics, -- Problems, exercises, etc.,a04",
URL = "/book/101002560/Monthly-problem-gems/"}