Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{AM2_1986__31_137143, author = {S.-Y. Shaw and C.-S. Lee and W.-L. Chiou}, title = {Representation formulas for cosine and sine functions of operators {II.}}, journal = {Aequationes mathematicae}, pages = {64--75}, publisher = {mathdoc}, volume = {31}, year = {1986}, zbl = {0647.47048}, url = {http://geodesic.mathdoc.fr/item/AM2_1986__31_137143/} }
S.-Y. Shaw; C.-S. Lee; W.-L. Chiou. Representation formulas for cosine and sine functions of operators II.. Aequationes mathematicae, Tome 31 (1986), pp. 64-75. http://geodesic.mathdoc.fr/item/AM2_1986__31_137143/