1. 1) Gess, J. M. : “Retention of Fines and Fillers during Papermaking”, TAPPI press, Atlanta, USA, 1998
2. 2) Davison, R.W. : TAPPI Papermaking Conference, Atlanta, USA, 1982, p153
3. 4) Tanaka, H., Luner, P. and Cote, W. : Tappi J. 65 (4) 95 (1982)