@article{Brent:1978:FMP,
author = {Brent, R. P.},
title = {A {F}ortran multiple-precision arithmetic package},
journal = {ACM Trans. Math. Software},
fjournal = {Association for Computing Machinery. Transactions on
Mathematical Software},
volume = {4},
year = {1978},
number = {1},
pages = {57–70},
issn = {0098-3500},
doi = {10.1145/355769.355775}}