PRESSOO is a formal ontology designed to represent the bibliographic information about continuing resources, and more specifically about serials (journals, newspapers, magazines, etc.). It is an extension of the FRBROO model (Functional Requirements for Bibliographic Records – Object Oriented). FRBROO is in turn is an extension of CIDOC CRM, the conceptual reference model for cultural heritage information.
RESSOO aims to propose answers to long standing issues with the application of the FRBR family of models to serials and continuing resources.
The Definition of PRESSOO was approved by the IFLA Committee on Standards and then endorsed by the IFLA Professional Committee at its meeting on 31 March 2017.