@article{ZNSL_1979_90_a7,
     author = {T. E. Safonova},
     title = {On minimization of a~number of elements of jobs being out of their directive intervals},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {186--193},
     publisher = {mathdoc},
     volume = {90},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_90_a7/}
}