1. M. Ader, O. Nierstrasz, S. McMahon, G. Muller, A-K Pröfrock, “The ITHACA Technology: a Landscape for Object-Oriented Application Development”, Proc. ESPRIT1990 Conf., Kluwer Academic Publisher, November 1990
2. K. Becker, F. Bodart, “Reusable Object-Oriented Specifications for Decision Support Systems”, EFIP WG 8.4 Working Conf. on Object Oriented Aspects in Information Systems, Quebec, October 1991
3. R. Bellinzona, M. G. Fugini, “RECAST User Manual”, Technical Report ITHACA.POLIMI.92.E.2.9.3, Politecnico di Milano, December 1992
4. R. Bellinzona, M. G. Fugini, B. Pernici, “An environment for requirement reuse”, Report n. 92_082, Politecnico di Milano, December 1992
5. “Software Information Base - A Server for Reuse”;Constantopoulos,1992