COOPER, W. S., AITAO CHEN, & GEY, F. C. (1995, Januar 1). Experiments in the probabilistic retrieval of full text documents. (500225). Gaithersburg, MD: National Institute of Standards and Technology, 1995. Abgerufen von http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=2484607

COOPER, W. S, AITAO CHEN und GEY, F. C, 1995. Experiments in the probabilistic retrieval of full text documents. In: [online]. Gaithersburg, MD: National Institute of Standards and Technology, 1995. 1 Januar 1995. Available from: http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=2484607

COOPER, W. S., AITAO CHEN, und F. C. GEY. Experiments in the probabilistic retrieval of full text documents. Nr. 500225, Gaithersburg, MD: National Institute of Standards and Technology, 1995., 1995, http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=2484607.

COOPER, W.S., AITAO CHEN und GEY, F.C. (1995), „Experiments in the probabilistic retrieval of full text documents“, in , Bd. , Gaithersburg, MD: National Institute of Standards and Technology, 1995., verfügbar unter: http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=2484607.