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@article{MZM_1979_25_1_a11, author = {I. N. Gurova and P. E. Sobolevskii}, title = {$L$-characteristics of fractional powers of difference operators}, journal = {Matemati\v{c}eskie zametki}, pages = {123--137}, publisher = {mathdoc}, volume = {25}, number = {1}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_1_a11/} }
I. N. Gurova; P. E. Sobolevskii. $L$-characteristics of fractional powers of difference operators. Matematičeskie zametki, Tome 25 (1979) no. 1, pp. 123-137. http://geodesic.mathdoc.fr/item/MZM_1979_25_1_a11/