@article{PDM_2013_3_a6,
     author = {M. B. Abrosimov and O. V. Modenova},
     title = {Characterization of graphs with three additional edges in a~minimal $1$-vertex extension},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {68--75},
     publisher = {mathdoc},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2013_3_a6/}
}