On the computation of the second differences of the ${\text{Si}}\left( x \right),{\text{Ei}}\left( x \right)$, and ${\text{Ci}}\left( x \right)$ functions
@article{1183502006,
author = {Lowan, A. N.},
title = {On the computation of the second differences of the ${\text{Si}}\left( x \right),{\text{Ei}}\left( x \right)$, and ${\text{Ci}}\left( x \right)$ functions},
journal = {Bull. Amer. Math. Soc.},
volume = {45},
number = {11},
year = {1939},
pages = { 583-588},
language = {en},
url = {http://dml.mathdoc.fr/item/1183502006}
}
Lowan, A. N. On the computation of the second differences of the ${\text{Si}}\left( x \right),{\text{Ei}}\left( x \right)$, and ${\text{Ci}}\left( x \right)$ functions. Bull. Amer. Math. Soc., Tome 45 (1939) no. 11, pp. 583-588. http://gdmltest.u-ga.fr/item/1183502006/