IFLA Library Reference Model

[1] The IFLA LRM is intended to be used as the basis of cataloguing rules and implementing bibliographic information systems.

[3] IFLA LRM adds super-classes res ("thing") and agent to facilitate formal relationship definitions.

[4] Time span and place are entities rather than literal values.

It uses the same Work, Expression, Manifestation, Item (WEMI) model as FRBR Group 1 entities.

The FRBR Group 2 corporate body and FRAD family are combined into a single collective agent type.