Sharma, B. D. (2003). Differential equations. Kadar Nath Ram Nath.
Chicago-čujuhus (17. p.)Sharma, Bhu Dev. Differential Equations. Meerut: Kadar Nath Ram Nath, 2003.
MLA-čujuhus (9. p.)Sharma, Bhu Dev. Differential Equations. Kadar Nath Ram Nath, 2003.
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