https://hermitaudio.github.io/thesis/index.htmlM.Sc Thesis — Weak Nonlinearities University of Oslo, 1985 The thesis itself will be uploaded once it’s converted, preferably to English, and at least from printed form — it was written on a long-forgotten computer and I’m no longer able to read the diskettes. (Update since the old site: a scanned copy of the printed thesis exists and will be added here.)Hugoen-us