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@article{MS_1973__132_2_a2, author = {{\CYRM}.{\CYRA}. {\CYRF}{\cyrr}{\cyru}{\cyrm}{\cyrk}{\cyri}{\cyrn}}, title = {{\CYRF}{\cyri}{\cyrl}{\cyrsftsn}{\cyrt}{\cyrr}{\cyra}{\cyrc}{\cyri}{\cyrya} {\cyrv} {\cyrt}{\cyrr}{\cyre}{\cyrh}{\cyrm}{\cyre}{\cyrr}{\cyrn}{\cyro}{\cyrishrt} {\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp}{\cyre} {{\CYRK}{\cyrr}{\cyre}{\cyrm}{\cyro}{\cyrn}{\cyrery}}}, journal = {Matemati\v{c}eskij sbornik}, pages = {196--213}, publisher = {mathdoc}, volume = {132}, number = {2}, year = {1973}, zbl = {0254.14006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1973__132_2_a2/} }
М.А. Фрумкин. Фильтрация в трехмерной группе Кремоны. Matematičeskij sbornik, Tome 132 (1973) no. 2, pp. 196-213. http://geodesic.mathdoc.fr/item/MS_1973__132_2_a2/