1. Schwarzl, F. R. andL. C. E. Struik, “Analysis of relaxation measurements”, Advances in Molecular Relaxation Processes (Amsterdam). in press.
2. van der Wal, C. W. andR. H. J. W. A. Drent, “A torsional creep apparatus”, Rheol. Acta7, 265 (1968).
3. Struik, L. C. E. andG. A. Schwippert, TNO-Nieuws21, 285 (1966).
4. Hamon, B. V., Proc. Inst. Elect. Eng.1952, 99 pt IV.
5. Schwarzl, F. R., Rheol. Acta7, 13 (1968).