@article{MM_1990_2_6_a13,
     author = {A. G. Perevozchikov},
     title = {Grades construction methods over the inequalities relations kernels},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {132--140},
     publisher = {mathdoc},
     volume = {2},
     number = {6},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1990_2_6_a13/}
}