@article{INTD_1981_18_a0,
     author = {V. V. Nikulin},
     title = {Quotient-groups of groups of automorphisms of hyperbolic forms by subgroups generated by 2-reflections. {Algebro-geometric} applications},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Noveishie Dostizheniya},
     pages = {3--114},
     publisher = {mathdoc},
     volume = {18},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTD_1981_18_a0/}
}