Boyce, W. E. D. Elementary Differential Equations and Boundary Value Problems, Global Edition. Wiley.
Lua i Stíl Chicago (17ú heag.)Boyce, William E; Diprima. Elementary Differential Equations and Boundary Value Problems, Global Edition. Wiley.
Lua MLA (9ú heag.)Boyce, William E; Diprima. Elementary Differential Equations and Boundary Value Problems, Global Edition. Wiley.
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