“…Of 34 cases, six can be considered substantial (at least 100,000 lines of source code) [AB90,Hek87,Tam82,Mar90,Kie91,A9], and another nine are medium-sized [Gom83, BJK + 89, CB85, A1, A4, Zel80, GCG + 89, Bar89]. We used the descriptions given in the case study reports to distinguish between medium and small projects.…”