By:
Koppel T, Haldre H, Shishkin A, Hussainova I, Toropovs N, Mironovs V, Tint P
Published in: 2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON), Riga, Latvia. IEEE, 2016: pp. 1-6; ISBN 978-1-5090-3732-2
