@article{MZM_1982_31_3_a13,
     author = {S. S. Marchenkov},
     title = {The complexity of computing exponents},
     journal = {Matemati\v{c}eskie zametki},
     pages = {457--463},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1982_31_3_a13/}
}