@article{RM_1968_23_3_a18,
     author = {Yu. M. Smirnov},
     title = {First {International} {Conference} on {Theory} of {Extensions}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1968},
     volume = {23},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1968_23_3_a18/}
}