NEUTRON SCATTERING FROM THE HEISENBERG DOUBLE-LAYER ANTIFERROMAGNET K3Mn2F7 C.M.J. Van Uijen, H.W. De Wijn et E. Frikkee J. Phys. Colloques, 39 C6 (1978) C6-755-C6-756 DOI: 10.1051/jphyscol:19786337