@article{UZERU_2001_2_a0,
     author = {I. E. Danielyan},
     title = {On equivalent slowly varying functions},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {3--8},
     year = {2001},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2001_2_a0/}
}