Guttinger, W., Güttinger, W., & Eikemeier, H. (1979). Structural stability in physics: Proceedings of two International Symposia on Applications of Catastrophe Theory and Topological Concepts in Physics, Tübingen, Fed. Rep. of Germany, May 2-6 and December 11-14, 1978. Springer-Verlag.

Guttinger, W., W. Güttinger, a H. Eikemeier. Structural Stability in Physics: Proceedings of Two International Symposia on Applications of Catastrophe Theory and Topological Concepts in Physics, Tübingen, Fed. Rep. of Germany, May 2-6 and December 11-14, 1978. Berlin ; New York: Springer-Verlag, 1979.

Guttinger, W., et al. Structural Stability in Physics: Proceedings of Two International Symposia on Applications of Catastrophe Theory and Topological Concepts in Physics, Tübingen, Fed. Rep. of Germany, May 2-6 and December 11-14, 1978. Springer-Verlag, 1979.