Hanzelka, Zbigniew     Single-point methods for location of distortion, unbalance, voltage fluctuation and dips sources in a power system [Текст] / Zbigniew Hanzelka, Piotr Slupski, Krzysztof Piatek та ін. // Power quality - monitoring, analysis and enhancement / ed. Ahmed Zobaa Mario [et al.]. — [S. l.] : InTech, 2011. — P. 158-198.