\bib{1995/tryggeseth}
\yr 1995
\by Eirik Tryggeseth
\by Bj\orn Gulla
\by Reidar Conradi
\paper Modelling systems with variability using the PROTEUS configuration language
\pages 216--240
\inbook \cite{1995/estublier-book}
\url http://www.idi.ntnu.no/grupper/su/publ/pdf/pcl-scm5.pdf
\endref
