Possibilities of radioisotope measuring in control of an unstable solid particles hydrotransportLeszek Petryka, Marcin Zych, Robert Hanus, Jerzy Sobota, Pavel Vlasak, Monika Śleziak and Dariusz ŚwisulskiEPJ Web of Conferences, 114 (2016) 02093DOI: https://doi.org/10.1051/epjconf/201611402093