From the Nambu-Goto the Sigma-Model Action, Memoirs from Long Ago

Abstract

In this article I describe my own stumblings in the first string era. This was a time when most of the active people were very young, not very knowledgeable and the field was completely new. Many of us had little training for what we came to work on, and it took quite some time to accomplish the new conceptual discoveries.

Contribution to the volume "The Birth of StringTheory" 12 pages