@article{VUU_2006_1_a11,
     author = {A. G. Chentsov},
     title = {On the structure of an extremal problem of rout optimization with constraints in the form of precedence conditions},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {127--150},
     publisher = {mathdoc},
     number = {1},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2006_1_a11/}
}