1. K. Ebeling, in: Proceedings of the International Symposium on Fundamental Concepts of Refining, Appleton, USA, 16–18 September 1980, p. 1.
2. D.H. Page, in: Trans. 9th Fund. Res. Symp. Fundamentals of papermaking, MEP, London, 1989, p. 1.
3. Chemical factors affecting the behaviour of fibres - during papermaking