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Carver, Andy and Halpin, Terry (2013) Reference scheme reduction on subtypes in ORM. [Teaching Resource]
Carver, Andy (2011) Roles in ORM: A suggested semantics. [Teaching Resource]
Carver, Andy and Halpin, Terry (2010) Atomicity and semantic normalization. International Journal of Information System Modeling and Design (IJISMD), 1 (2). ISSN 1947-8186