Osipova M. A., Tsitsiashvili G. Sh. «Optimal algorithm for converting an acyclic digraph to a cluster» // Applied Discrete Mathematics 2021. №54 C.94-98
Fomichev V. M., Avezova Y. E. «Primitiveness conditions for systems of two graphs» // Applied Discrete Mathematics. Supplement 2015. №8 C.113-114
