@book{35208,
	author = {Ayres, Frank, 1901-1994},
	title = {Schaum's outline of theory and problems of differential equations in si metric units /},
	publisher = {Schaum,},
	year = {1952.},
	series = {Schaum's outline series},
	address = {New York :},
	note = {On cover: Including 560 solved problems, completely solved in detail.}
}