@article{PDM_2012_1_a7,
     author = {M. B. Abrosimov},
     title = {Characterization of graphs with a~given number of additional edges in a~minimal 1-vertex extension},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {111--120},
     publisher = {mathdoc},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2012_1_a7/}
}