@article{SM_1990_65_2_a11,
     author = {G. L. Lopes},
     title = {Relative asymptotics for polynomials orthogonal on the real axis},
     journal = {Sbornik. Mathematics},
     pages = {505--529},
     publisher = {mathdoc},
     volume = {65},
     number = {2},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1990_65_2_a11/}
}