@article{DVMG_2020_20_2_a14,
     author = {G. Sh. Tsitsiashvili},
     title = {The computational complexity of optimal blocking of vertices in the digraph},
     journal = {Dalʹnevosto\v{c}nyj matemati\v{c}eskij \v{z}urnal},
     pages = {267--270},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DVMG_2020_20_2_a14/}
}