Gottlob, G., Kappel, G., & Schrefl, M. (1995). The Evolving Algebra Semantics of Class and Role Hierarchies. Springer.
Dyfyniad Arddull ChicagoGottlob, G., G. Kappel, and M. Schrefl. The Evolving Algebra Semantics of Class and Role Hierarchies. Springer, 1995.
Dyfyniad MLAGottlob, G., et al. The Evolving Algebra Semantics of Class and Role Hierarchies. Springer, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.