@article{TIMM_1995_3_a1,
     author = {S. V. Berdyshev and A. N. Fomin},
     title = {Characterization of the minimal summators of two and three variables},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {19--30},
     publisher = {mathdoc},
     volume = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_1995_3_a1/}
}