@article{SM_1999_190_6_a1,
     author = {V. S. Buyarov and E. A. Rakhmanov},
     title = {Families of equilibrium measures in an~external field on the~real axis},
     journal = {Sbornik. Mathematics},
     pages = {791--802},
     year = {1999},
     volume = {190},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1999_190_6_a1/}
}