@article{ZNSL_2019_488_a6,
     author = {A. V. Pastor},
     title = {On vertices of degree $6$ of minimally and contraction critically $6$-connected graph},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {143--167},
     publisher = {mathdoc},
     volume = {488},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2019_488_a6/}
}