Supporting Information Needs by Ostensive Definition in an Adaptive Information Space. - Iain Campbell (MIRO, 1995)

"Is This Document Relevant? ... Probably": A Survey of Probabilistic Models in Information Retrieval. - Fabio Crestani; Mounia Lalmas; C. J. van Rijsbergen; Iain Campbell (ACM Comput. Surv., 1998)

Interactive Evaluation of the Ostensive Model Using a New Test Collection of Images with Multiple Relevance Assessments. - Iain Campbell (Inf. Retr., 2000)

The ostensive model of developing information needs. - Iain Campbell (2000)