@article{RM_1971_26_6_a9,
     author = {I. M. Krichever},
     title = {Bordisms of groups acting freely on spheres},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {26},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1971_26_6_a9/}
}