Change-oriented version descriptions in EPOS. - Bjørn Gulla; Even-André Karlsson; Dashing Yeh (Softw. Eng. J., 1991)

Improved maintenance support by multi-version visualizations. - Bjørn Gulla (ICSM, 1992)

A Browser for a Versioned Entity-Relationship Database. - Bjørn Gulla (IDS, 1992)

Onion graphs: aesthetics and layout. - Guttorm Sindre; Bjørn Gulla; Håkon G. Jokstad (VL, 1993)

Supporting Evolution of SDL-based Systems: Industrial Experience. - Bjørn Gulla; Joe Gorman (FORTE, 1995)

Modelling Systems with Variability using the PROTEUS Configuration Language. - Eirik Tryggeseth; Bjørn Gulla; Reidar Conradi (SCM, 1995)

Enabling reuse with a configuration language. - Jacqueline Floch; Bjørn Gulla (ICSR, 1996)

Experiences with the Use of a Configuration Language. - Bjørn Gulla; Joe Gorman (SCM, 1996)