Boyce, William E. Elementary differential equations and boundary value problems / by William E. Boyce and Richard C. Diprima - 7th ed. - New York: John Wiley & Sons Inc., 2001. - xvi, 745p. ISBN: 9812530061 Subjects--Topical Terms: Linear equationsMathNonhomogeneousNumerical methods Dewey Class. No.: 515.35 / BOY/E