@article{CMFD_2012_44_a0,
     author = {V. G. Zvyagin and N. M. Ratiner},
     title = {Oriented degree of {Fredholm} maps: finite-dimensional reduction method},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {3--171},
     publisher = {mathdoc},
     volume = {44},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2012_44_a0/}
}