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@article{IVM_1969_11_a8, author = {V. V. Smirnova}, title = {A~certain stratification of pairs of two-parameter families of planes in $P_5$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {76--86}, publisher = {mathdoc}, number = {11}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1969_11_a8/} }
V. V. Smirnova. A~certain stratification of pairs of two-parameter families of planes in $P_5$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1969), pp. 76-86. http://geodesic.mathdoc.fr/item/IVM_1969_11_a8/