@article{FPM_2007_13_8_a0,
     author = {P. M. Akhmet'ev},
     title = {Geometric approach to stable homotopy groups of spheres. {The} {Adams--Hopf} invariants},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {3--15},
     publisher = {mathdoc},
     volume = {13},
     number = {8},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2007_13_8_a0/}
}