@article{FAA_2013_47_4_a8,
     author = {E. V. Shul'man},
     title = {Subadditive {Maps} and {Functional} {Equations}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {90--94},
     publisher = {mathdoc},
     volume = {47},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2013_47_4_a8/}
}