@article{DAN_1987_292_4_a6,
     author = {I. M. Dektyarev},
     title = {A remark on the structure of the set of deficient divisors},
     journal = {Doklady Akademii Nauk},
     pages = {800--803},
     publisher = {mathdoc},
     volume = {292},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_292_4_a6/}
}