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@article{BNYMS_1893__2_186499, author = {W.H. Echols}, title = {On a {General} {Formula} for the {Expansion} of {Functions} in {Series.}}, journal = {Bulletin of the New York Mathematical Society}, pages = {135--144}, publisher = {mathdoc}, volume = {2}, year = {1893}, zbl = {25.0392.01}, url = {http://geodesic.mathdoc.fr/item/BNYMS_1893__2_186499/} }
W.H. Echols. On a General Formula for the Expansion of Functions in Series.. Bulletin of the New York Mathematical Society, Tome 2 (1893), pp. 135-144. http://geodesic.mathdoc.fr/item/BNYMS_1893__2_186499/