MAGNETIC SUB-CHAIN ANISOTROPY IN THE CROSSING CHAIN COMPOUND HMM(TCNQ)2 S. Oostra, R.J.J. Visser, G.A. Sawatzky and C.F. Schwerdtfeger J. Phys. Colloques, 44 C3 (1983) C3-1381-C3-1382 DOI: 10.1051/jphyscol/1983022