@article{UZERU_1997_2_a0,
     author = {S. M. Narimanyan},
     title = {On uniqueness of harmonic functions for random walks on the countable groups},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {3--7},
     publisher = {mathdoc},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_1997_2_a0/}
}