Agarwal, R. P. (1986). Boundary value problems for higher order differential equations. World Scientific.
Chicago-referens (17:e uppl.)Agarwal, Ravi P. Boundary Value Problems for Higher Order Differential Equations. Singapore ; Philadelphia, Pa.: World Scientific, 1986.
MLA-referens (8:e uppl.)Agarwal, Ravi P. Boundary Value Problems for Higher Order Differential Equations. World Scientific, 1986.
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