@article{IM2_1970_4_4_a8,
     author = {A. F. Leont'ev},
     title = {On methods of solution of an infinite order equation in the real
},
     journal = {Izvestiya. Mathematics },
     pages = {859--890},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_4_a8/}
}