@article{1977-bays ,note={URL: {\tt http://cr.yp.to/\allowbreak bib/\allowbreak entries.html\#\allowbreak 1977/\allowbreak bays}} ,author={Carter Bays and Richard H. Hudson} ,ISSN={0006--3835} ,journal={BIT} ,MR={56:5405} ,pages={121--127} ,title={{The segmented sieve of Eratosthenes and primes in arithmetic progressions to $10^{12}$}} ,volume={17} ,year={1977} }