@article{SM_2008_199_6_a4,
     author = {Yu. V. Pokornyi},
     title = {Zeros of the {Green's} function for the de la {Vall\'ee-Poussin} problem},
     journal = {Sbornik. Mathematics},
     pages = {891--921},
     year = {2008},
     volume = {199},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2008_199_6_a4/}
}