1. Pletzke T. Adhes. Age 29/(5), 22, 1986.
2. Adhes. Age 29/(11), 17, 1986.
3. French E.L. in: Alner D.J.ed. “Aspects of Adhesion” 1, 120. University of London Press Limited, London 1963
4. Waters W.T.: Adhes Age 29/(1), 19,1986.
5. Lucke H.: Adhasion 10, 364, 1970.