Paulo Carreira Helena Galhardas João Pereira Andrzej Wichert On Handling One-to-Many Transformations in Relational Systems. 121-134 2007 ICEIS (Selected Papers) http://dx.doi.org/10.1007/978-3-540-88710-2_10 conf/iceis/2007sp db/conf/iceis/iceis2007sp.html#CarreiraGPW07a