@ARTICLE{Liu_L._Deliberations_2015, author={Liu, L. and Liu, C.}, volume={63}, number={No 1}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={261-267}, howpublished={online}, year={2015}, title={Deliberations about three-phase PLL technologies applied to a grid control of the renewable power system}, URL={http://www.czasopisma.pan.pl/Content/84151/PDF/30_paper.pdf}, doi={10.1515/bpasts-2015-0030}, }