1. Böhringer, H., Faserforschg. Textiltechnik5, 9 (1954);5, 55 (1954);5, 91 (1954);5, 159 (1954);5, 193 (1954);5, 242 (1954);6, 314 (1955); Textil-Praxis10, 751 (1955).
2. Meskat, W. undW. Hoffmann, Rheol. Acta1, 77 (1958).
3. Leaderman, H., Elastic and Creep Properties of Filamentous Materials and other High Polymers (Washington D. C. 1943).
4. Alfrey jr.,T., Mechanical Behavior of High Polymers (New York 1948).
5. Gross, B., Mathematical Structure of the Theories of Viscoelasticity (Paris 1953).