@article{VMUMM_2021_1_a8,
     author = {M. I. Shekalev and G. V. Bokov and V. B. Kudryavtsev},
     title = {On the complexity of a linear ordering of weighted directed acyclic graphs},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {55--57},
     publisher = {mathdoc},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2021_1_a8/}
}