\bib{1999/heydon}
\yr 1999
\by Allan Heydon
\by Roy Levin
\by Timothy Mann
\by Yuan Yu
\book The Vesta approach to software configuration management
\bookinfo Research Report 1999--001
\publ Compaq Systems Research Center Research
\url ftp://gatekeeper.research.compaq.com/pub/DEC/SRC/research-reports/SRC-1999-001.pdf
\seenewer \cite{2001/heydon}
\endref
