@article{DAN_1965_163_2_a6,
     author = {S. P. Novikov},
     title = {Topological invariance of rational classes of {Pontrjagin}},
     journal = {Doklady Akademii Nauk},
     pages = {298--300},
     publisher = {mathdoc},
     volume = {163},
     number = {2},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_163_2_a6/}
}