@article{TM_1973_132_a8,
     author = {A. F. Lavrik},
     title = {The principal of nonstandard functional equations theory for {Dirichlet's} functions, consequences and applications of it},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {70--76},
     year = {1973},
     volume = {132},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1973_132_a8/}
}