Hiding Expressed Using Relation Algebra with Multi-Relations - Oblique Lifting and Lowering for Unbalanced Systems. - Reinder J. Bril; Loe M. G. Feijs; André Glas; René L. Krikhaar; Thijs Winter (CSMR, 2000)

Maintaining a legacy: towards support at the architectural level. - Reinder J. Bril; Loe M. G. Feijs; André Glas; René L. Krikhaar; Thijs Winter (J. Softw. Maintenance Res. Pract., 2000)