@article{TRSPY_1975_136_a28,
     author = {H. R. Reeh},
     title = {Problems of the ground state of the infinite {Heisenberg} antiferromagnet},
     journal = {Informatics and Automation},
     pages = {390--398},
     publisher = {mathdoc},
     volume = {136},
     year = {1975},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1975_136_a28/}
}