@article{PDMA_2014_7_a0,
     author = {R. I. Bar-Gnar and V. M. Fomichev},
     title = {About the minimal primitive matrices},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {7--9},
     publisher = {mathdoc},
     number = {7},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2014_7_a0/}
}