@article{DAN_1964_157_4_a15,
     author = {V. A. Evstigneev},
     title = {A time transportation problem in graph theory},
     journal = {Doklady Akademii Nauk},
     pages = {814--815},
     publisher = {mathdoc},
     volume = {157},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_4_a15/}
}