Magnetic studies of monoclinic Cu4O(SeO3)3, a copper-oxo-selenite derivative José F. Malta, Marta S.C. Henriques, José A. Paixão and António P. Gonçalves EPJ Web Conf., 233 (2020) 01002 Published online: 16 April 2020 DOI: 10.1051/epjconf/202023301002