@article{PDM_2021_4_a3,
     author = {G. Sh. Tsitsiashvili and M. A. Osipova},
     title = {Optimal algorithm for converting an acyclic digraph to a cluster},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {94--98},
     publisher = {mathdoc},
     number = {4},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2021_4_a3/}
}