@article{DAN_1967_175_3_a7,
     author = {N. N. Sandakova},
     title = {On the theory of $\zeta$-functions of three variables},
     journal = {Doklady Akademii Nauk},
     pages = {535--538},
     publisher = {mathdoc},
     volume = {175},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_175_3_a7/}
}