The MULTI spectrometer for measurement of β-decay process in exotic nucleiIvan Siváček, Sergey Stukalov, Yuri Sobolev, Dmitry Testov, Vladimir Smirnov, Yuri Penionzhkevich and Zhasulan ZeinullaEPJ Web Conf., 253 (2021) 01003DOI: https://doi.org/10.1051/epjconf/202125301003