References
- Knopf, P. M. (2003). The operator (xddx)n and its applications to series. Math. Mag. 76(5): 364–371.
- Sellers, J. A. (2002). Beyond mere convergence. PRIMUS XII(2): 157–164. DOI: 10.1080/10511970208984024.
- Sloane, N. J. A., ed. (2001). The online encyclopedia of integer sequences. oeis.org.
- Vandervelde, S. (2018). The Worpitzky numbers revisited. Amer. Math. Monthly 125(3): 198–206. DOI: 10.1080/00029890.2018.1408347.