@article{DAN_1985_282_3_a11,
     author = {A. G. Pogorelov},
     title = {Partition of a set of approximate operators into simply ordered},
     journal = {Doklady Akademii Nauk},
     pages = {559--564},
     publisher = {mathdoc},
     volume = {282},
     number = {3},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_282_3_a11/}
}