// <I>PEPM 2020<D> : 25th Scientific conference on ''Power engineering and power machines PEPM 2020'', Sozopol, Bulgaria, 19-21 september 2020 : E3S Web of conferences 207, 2020, 04004, 2020, https://doi.org/10.1051/e3sconf/202020704004.
G. S. Popov; K. Klimentov; B. Kostov;
R. Dimitrova и др.
// <I>Reports<D> awarded with "Best paper" crystal prize : 59th Annual sci. conf. Ruse univ. and Union of Scientists "New industries, digital economy, society - projections of the future III'', Ruse, Silistra, Razgrad, 2020, p. 57-62.