@book{6277,
	author = {Greenspan, Donald.},
	title = {Lectures on the numerical solution of linear, singular, and nonlinear differential equations /},
	publisher = {Prentice-Hall,},
	year = {c1968.},
	series = {Prentice-Hall series in automatic computation},
	address = {Englewood Cliffs, N.J. :}
}