@article{VMUMM_1989_6_a0,
     author = {Kh. M. Abud},
     title = {The greatest prime divisor of an arithmetic sequence},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--7},
     year = {1989},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_6_a0/}
}