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@article{DAN_1966_166_5_a11, author = {G. A. Margulis}, title = {Positive harmonic functions on nilpotent groups}, journal = {Doklady Akademii Nauk}, pages = {1054--1057}, publisher = {mathdoc}, volume = {166}, number = {5}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_166_5_a11/} }
G. A. Margulis. Positive harmonic functions on nilpotent groups. Doklady Akademii Nauk, Tome 166 (1966) no. 5, pp. 1054-1057. http://geodesic.mathdoc.fr/item/DAN_1966_166_5_a11/