@article{LKN_2006_2_2_a0,
     author = {M. E. Changa},
     title = {Method of complex integration},
     journal = {Lekcionnye kursy NOC},
     pages = {3--56},
     year = {2006},
     volume = {2},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/LKN_2006_2_2_a0/}
}