Recognition and Measurement of Intellectual Resources: The Accounting-Relating Challenges of Intellectual Capital. - David O'Donnell; Philip O'Regan; Veronica O'Regan (PAKM, 2000)

Communicative Action in Intellectual Capital Creation: An Empirical Test. - David O'Donnell; Peter Cleary; Nick Bontis; Philip O'Regan; Tom Kennedy (ECKM, 2005)