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@article{IM2_1970_4_3_a1, author = {A. S. Mishchenko}, title = {Homotopy invariants of nonsimply connected manifolds. {I.~Rational} invariants}, journal = {Izvestiya. Mathematics }, pages = {506--519}, publisher = {mathdoc}, volume = {4}, number = {3}, year = {1970}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_3_a1/} }
A. S. Mishchenko. Homotopy invariants of nonsimply connected manifolds. I.~Rational invariants. Izvestiya. Mathematics , Tome 4 (1970) no. 3, pp. 506-519. http://geodesic.mathdoc.fr/item/IM2_1970_4_3_a1/