The relations for potentials of filtration flows in media with common boundary and there employing for founded solutions some problems
... 1994.
6. Зайцев А. А., Шпилевой А. Я. Теория стационарных физических полей в кусочно-однородных средах : учеб. пособие. Калининград, 2001.
Zaitsev A. A., Volyanskaya I. K.
complex potential of filtration flow, positive and negative flows, reflection and transaction, laying media, Fourier-representation.
18-23