Coddington, E. A., & Snoo, H. S. V. d. (1981). Regular boundary value problems associated with pairs of ordinary differential expressions. Springer.
Chicago Style (17th ed.) CitationCoddington, Earl A., and Hendrik Simon Victor de Snoo. Regular Boundary Value Problems Associated with Pairs of Ordinary Differential Expressions. Berlin: Springer, 1981.
MLA (9th ed.) CitationCoddington, Earl A., and Hendrik Simon Victor de Snoo. Regular Boundary Value Problems Associated with Pairs of Ordinary Differential Expressions. Springer, 1981.