%0 Journal Article %A H. R. Reeh %T Problems of the ground state of the infinite Heisenberg antiferromagnet %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1975 %P 390-398 %V 136 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1975_136_a28/ %G en %F TM_1975_136_a28