@article{INTG_1978_10_a4,
     author = {A. P. Norden},
     title = {The theory of compositions},
     journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara},
     pages = {117--145},
     publisher = {mathdoc},
     volume = {10},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTG_1978_10_a4/}
}