@book{33262,
	author = {Li Ta-Tsien},
	title = {Problems and solutions in mathematics},
	publisher = {World Scientific},
	year = {2011},
	series = {Major American Universities Ph.D. qualifying questions and solutions - Mathematics},
	address = {New Jersey},
	edition = {2nd},
	note = {complied by Chen Ji- Xiu ... et. al.}
}