1. ASTM Proposed Method of Test for Environmental Stress Cracking of Ethylene Plastics, American Society for Testing and Materials, Bull. No. 218, 1956, p. 25.
2. Modification of Atlas Twin-Arc Weather-Ometer
3. and Proceedings of the Battelle Symposium on Thermal Stability of Polymers, Battelle Memorial Institute, Columbus, Ohio (1963), p. N-1.
4. and 145th National Meeting of the American Chemical Society, Los Angeles, Calif., Polymer Division Preprints, 4, No. 1, 230 (1963).