MAGNETIC PROPERTIES OF K2NiF4 TYPE OXIDES, SrLaMnO4+x (0 ≤ x ≤ 0.2) S. Kawano, N. Achiwa, N. Kamegashira and M. Aoki J. Phys. Colloques, 49 C8 (1988) C8-829-C8-830 DOI: 10.1051/jphyscol:19888373