1. R. S. Seth andD. H. Page,J. Mater. Sci. 9 (1974) 1745.
2. T. Uesaka, H. Okaniwa, K. Murakami, andR. Imamura,Japan Tappi 33 (1979) 403.
3. F. A. McClintock andG. R. Irwin, ?ASTM STP 381?, (American Society for Testing and Materials, Philadelphia, 1965) p. 84.
4. T. Uesaka, in ?Handbook of physical and mechanical testing of paper and paperboard?, Vol. 1, edited by R. E. Mark (Marcel Dekker, New York, 1983) p. 77.
5. J. R. Rice,J. Appl. Mech. Trans. AMSE 6 (1968) 379.