@article{LKN_2006_3_3_a0,
     author = {M. E. Kazarian},
     title = {Introduction to cohomology theory},
     journal = {Lekcionnye kursy NOC},
     pages = {3--104},
     year = {2006},
     volume = {3},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/LKN_2006_3_3_a0/}
}