Fred Douglis, Thomas Ball, Yih-Farn Chen, Eleftherios Koutsofios. The AT&T Internet Difference Engine: Tracking and Viewing Changes on the Web. World Wide Web, 1(1):27-44, 1998.
@article{DouglisBCK98, title = {The AT&T Internet Difference Engine: Tracking and Viewing Changes on the Web}, author = {Fred Douglis and Thomas Ball and Yih-Farn Chen and Eleftherios Koutsofios}, year = {1998}, researchr = {https://researchr.org/publication/DouglisBCK98}, cites = {0}, citedby = {0}, journal = {World Wide Web}, volume = {1}, number = {1}, pages = {27-44}, }