Giant magnetocaloric effect in composites based on polymeric matrix and manganese arsenide Nikolay Pankratov, Victor Mitsiuk, Alexander Vetcher, Andrei Krokhotin, Gennadiy Govor and Sergey Nikitin EPJ Web Conf., 185 (2018) 05010 Published online: 04 July 2018 DOI: 10.1051/epjconf/201818505010