1. Struik, L. C. E., Physical Aging in Amorphous Polymers and Other Materials, Elsevier (Amsterdam 1978).
2. Struik, L. C. E., G. Pezzin, Physical Aging of Elastin, to be published.
3. Struik, L. C. E., Polym. Eng. Sci.17, 165 (1977).
4. Struik, L. C. E., The Mechanical Enhancement of Physical Aging, to be published.