Davis, H. T. (1960). Introduction to nonlinear differential and integral equations. U.S. Atomic Energy Commission.
Chicago-viite (17. p.)Davis, Harold T. Introduction to Nonlinear Differential and Integral Equations. [Washington]: U.S. Atomic Energy Commission, 1960.
MLA-viite (8. p.)Davis, Harold T. Introduction to Nonlinear Differential and Integral Equations. U.S. Atomic Energy Commission, 1960.
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