@article{ZNSL_1973_37_a1,
     author = {A. B. Venkov and V. L. Kalinin and L. D. Faddeev},
     title = {A~nonarithmetic derivation of the {Selberg} trace formula},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--42},
     publisher = {mathdoc},
     volume = {37},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1973_37_a1/}
}