1. and ASTM STP 546, Am. Soc. Test. Mats., p. 284 (1974).
2. and Proc. 1977 Reinforced Plastics Conf., Soc. Plast. Ind.
3. and ASTM STP 580, Am. Soc. Test. Mats., p. 249 (1975).
4. and ASTM STP 658, Am. Soc. Test. Mats., p. 267 (1978).
5. Moisture penetration into composites under external stress