1. Weiss, P., ed., Adhesion and Cohesion. Proceedings of the Symposium on Adhesion and Cohesion, General Motors Research Laboratories (Warren, Michigan, 1961) (Elsevier Publishing Company, New York, 1962).
2. Ilkka, G. A. andR. L. Scott, p. 65
3. Reegan. S. L. andG. A. Ilkka, p. 159
4. Bikerman, J. J., p. 36
5. Engel, J. H., Jr., andR. N. Fitzwater, p. 99 (discussion).