CUDL Language Semantics, Liven Up the FDB Data Model. - Nikitas Karanikolas; Maria Nitsiou; Emmanuel J. Yannakoudakis; Christos Skourlas (ADBIS Research Communications, 2007)

CUDL Language Semantics: Authority Links. - Nikitas Karanikolas; Maria Nitsiou; Emmanuel J. Yannakoudakis (ADBIS (local proceedings), 2008)

Conceptual Universal Database Language (CUDL) and Enterprise Medical Information Systems. - Nikitas Karanikolas; Christos Skourlas; Maria Nitsiou; Emmanuel J. Yannakoudakis (ICEIS (1), 2008)

CUDL language semantics: Updating FDB data. - Nikitas N. Karanikolas; Maria Nitsiou; Emmanuel J. Yannakoudakis; Christos Skourlas (J. Syst. Softw., 2009)