(2000). Differential-operator equations: Ordinary and partial differential equations / Sasun Yakubov, Yakov Yakubov.
Chicago-viite (17. p.)Differential-operator Equations: Ordinary and Partial Differential Equations / Sasun Yakubov, Yakov Yakubov. 2000.
MLA-viite (9. p.)Differential-operator Equations: Ordinary and Partial Differential Equations / Sasun Yakubov, Yakov Yakubov. 2000.
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