@BOOK{ Book!D - 100879310,
AUTHOR = "/ [by] V. Lidsky...[and others]",
TITLE = "Problems in elementary mathematics",
LIBRARY= "دانشکده اقتصاد (دانشگاه تهران)",
SUBJECT = "Mathematics-Problems, exercises, etc",
URL = "/book/100879310/Problems-in-elementary-mathematics/"}