| | Malyar, Andriy Effect of sucker-rod pumping unit walking beam oscillation frequency on asynchronous electric drive [Текст] / Andriy Malyar, Bohdan Kaluzhnyi, Andriy Andreishyn, Kristian Molnar // Computational problems of electrical engineering / Lviv Polytechnic nat. univ. ; ed.-in-chief Yuriy Bobalo. — Lviv : lviv Polytechnic nat. univ., 2012. — P. 25–30. |
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