@article{VMUMM_1998_5_a12,
     author = {O. N. Vasilenko},
     title = {On some properties of {Fermat} numbers},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {56--58},
     year = {1998},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1998_5_a12/}
}