@article{TM_1991_200_a19,
     author = {A. F. Lavrik},
     title = {Arithmetical equivalents of functional equations of {Riemannian} type},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {213--221},
     publisher = {mathdoc},
     volume = {200},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1991_200_a19/}
}