@book{8804,
	author = {Sokolnikoff, Ivan Stephen, and Sokolnikoff, Elizabeth Stafford,},
	title = {Higher mathematics for engineers and physicists /},
	publisher = {McGraw-Hill,},
	year = {1941.},
	address = {New York ;},
	edition = {2nd ed.},
	note = {"Answers": p. 561-573.}
}