@article{IM2_1995_59_6_a0,
     author = {N. K. Vereshchagin},
     title = {Oracle separation of complexity classes and lower bounds for perceptrons solving separation problems},
     journal = {Izvestiya. Mathematics },
     pages = {1103--1122},
     publisher = {mathdoc},
     volume = {59},
     number = {6},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1995_59_6_a0/}
}