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@article{MAT_1960_4_4_a5, author = {W. Feller}, title = {On the equation of the vibrating string}, journal = {Matematika}, pages = {135--144}, publisher = {mathdoc}, volume = {4}, number = {4}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1960_4_4_a5/} }
W. Feller. On the equation of the vibrating string. Matematika, Tome 4 (1960) no. 4, pp. 135-144. http://geodesic.mathdoc.fr/item/MAT_1960_4_4_a5/