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@article{FAA_1984_18_1_a16, author = {B. V. Lidskii}, title = {Kostant function of the root system $A_n$}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {76--77}, publisher = {mathdoc}, volume = {18}, number = {1}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1984_18_1_a16/} }
B. V. Lidskii. Kostant function of the root system $A_n$. Funkcionalʹnyj analiz i ego priloženiâ, Tome 18 (1984) no. 1, pp. 76-77. http://geodesic.mathdoc.fr/item/FAA_1984_18_1_a16/
[1] Berezin F.A., Gelfand I.M., Trudy MMO, 5, 1956, 311–351 | MR