Brannan, James R. Differential equations with boundary value problems : modern methods and applications / James R. Brannan, William E. Boyce. - 2nd ed., international student version. - Hoboken, NJ : Wiley, 2011. - xxiv, 963 p. : ill. ; 27 cm. ISBN: 9780470458242 (pbk.) Subjects--Topical Terms: Differential equations Boundary value problems