@article{IM2_1991_36_1_a11,
     author = {I. N. Blinov},
     title = {The direct method, reducibility},
     journal = {Izvestiya. Mathematics },
     pages = {211--222},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1991_36_1_a11/}
}