@article{MZM_2004_75_5_a6,
     author = {P. V. Roldugin},
     title = {On the {Number} of {Non-Hamiltonian} {Graphs}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {702--710},
     year = {2004},
     volume = {75},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_75_5_a6/}
}