@article{gibbons-2006-unbounded, title={Unbounded Spigot Algorithms for the Digits of Pi}, volume={113}, ISSN={1930-0972}, url={http://dx.doi.org/10.1080/00029890.2006.11920310}, DOI={10.1080/00029890.2006.11920310}, number={4}, journal={The American Mathematical Monthly}, publisher={Informa UK Limited}, author={Gibbons, Jeremy}, year={2006}, month=Apr, pages={318–328} }