@article{SM_1978_34_4_a2,
     author = {A. A. Gonchar and G. L\'opez Lagomasino},
     title = {On {Markov's} theorem for multipoint {Pad\'e} approximants},
     journal = {Sbornik. Mathematics},
     pages = {449--459},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {1978},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1978_34_4_a2/}
}