@article{UZERU_2004_1_a3,
     author = {S. S. Davidov},
     title = {Binary terms and semiterms},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {33--42},
     year = {2004},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2004_1_a3/}
}