Paolo Ciancarini, Alessandro Fantechi, Roberto Gorrieri: Formal Methods for Open Object-Based Distributed Systems, IFIF TC6/WG6.1 Third International Conference on Formal Methods for Open Object-Based Distributed Systems (FMOODS), February 15-18, 1999, Florence, Italy. IFIP Conference Proceedings 139, Kluwer 1999, ISBN 0-7923-8429-6