@article{IM2_1971_5_3_a9,
     author = {A. T. Fomenko},
     title = {Bott periodicity from the point of view of an $n$-dimensional {Dirichlet} functional},
     journal = {Izvestiya. Mathematics },
     pages = {681--695},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1971_5_3_a9/}
}