@article{SMBlog:2013-05-21,
	author = {Steven M. Bellovin},
	title = {The Oldest Algorithmic Patent?},
	date = {2013-05-21},
	year = {2013},
	month = {May 21,},
	journal = {SMBlog: Steve Bellovin's Blog (blog)},
	url = {https://www.cs.columbia.edu/~smb/blog/2013-05/2013-05-21.html},
}