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@article{IVM_1998_3_a1, author = {I. S. Emel'yanova}, title = {A~case of the solution of the {Hess} problem in trigonometric functions}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {10--15}, publisher = {mathdoc}, number = {3}, year = {1998}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1998_3_a1/} }
I. S. Emel'yanova. A~case of the solution of the Hess problem in trigonometric functions. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1998), pp. 10-15. http://geodesic.mathdoc.fr/item/IVM_1998_3_a1/