Magnetic properties of the layered oxypnictides (LnO)MnAs (Ln = La, Ce, Pr, Nd) Y. Morosawa, A. Naito, T. Watanabe, Y. Takano and K. Takase EPJ Web of Conferences, 75 (2014) 07004 Published online: 03 July 2014 DOI: 10.1051/epjconf/20147507004