Radioisotope measurement of selected parameters of liquid-gas flow using single detector system Marcin Zych, Robert Hanus, Marek Jaszczur, Volodymyr Mosorov and Dariusz Świsulski EPJ Web Conf., 180 (2018) 02124 Published online: 04 June 2018 DOI: 10.1051/epjconf/201818002124