Walter Gautschi, Bruce J. Klein. Remark on algorithm 282 [S22] derivatives of ex/x, cos(x)/x, and sin (x)/x. Communications of the ACM, 13(1):53-54, 1970. [doi]
@article{GautschiK70a,
title = {Remark on algorithm 282 [S22] derivatives of ex/x, cos(x)/x, and sin (x)/x},
author = {Walter Gautschi and Bruce J. Klein},
year = {1970},
doi = {10.1145/361953.361988},
url = {http://doi.acm.org/10.1145/361953.361988},
researchr = {https://researchr.org/publication/GautschiK70a},
cites = {0},
citedby = {0},
journal = {Communications of the ACM},
volume = {13},
number = {1},
pages = {53-54},
}