@article{DA_1995_2_2_a5,
     author = {S. V. Sevast'yanov},
     title = {Nonstrict summation of vectors in the plane, and its application in problems of scheduling theory},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {69--100},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1995_2_2_a5/}
}