@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/}
}