@article{IIMI_2002_3_a2,
     author = {S. A. Logunov},
     title = {On remote points and butterfly-points},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {115--120},
     year = {2002},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2002_3_a2/}
}