@article{IVM_1985_1_a11,
     author = {G. V. Davydov and I. M. Davydova},
     title = {A~dual criterion of optimality in sorting problems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {57--59},
     publisher = {mathdoc},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_1_a11/}
}