@article{1938-lehmer ,note={URL: {\tt http://links.jstor.org/sici?sici=0002-9890(193804)45:4<227:EAFLN>2.0.CO;2-Y}} ,author={Derrick H. Lehmer} ,ISSN={0002--9890} ,journal={American Mathematical Monthly} ,pages={227--233} ,title={{Euclid's algorithm for large numbers}} ,volume={45} ,year={1938} }