1. Robertson , R. A. Advances and Trends in Calendering Technology 503
2. Sorenson M.A. Calendering basics: the theory and evolution of finishing technology 25 34 1994
3. Hofmann C. A Practical Treatise on the Manufacture of Paper in all its Branches Philadelphia H. Carey Baird
4. Dodd N. Royla G. The Ecosoft calender family and its newest member: the Ecosoft Delta, Twogether 48 51 2002