@article{IM2_1990_35_3_a2,
     author = {A. N. Varchenko},
     title = {The {Euler} beta-function, the {Vandermonde} determinant, {Legendre's} equation, and critical values of linear functions on a~configuration of {hyperplanes.~I}},
     journal = {Izvestiya. Mathematics },
     pages = {543--571},
     publisher = {mathdoc},
     volume = {35},
     number = {3},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1990_35_3_a2/}
}