1. Perturbation theory with chiral Lagrangians;Chan,1971
2. Infinities of Nonlinear and Lagrangian Theories
3. A.D. Hunt, K. Koller and A. Shafi, ICTP preprint 69/19, Phys. Rev., to be published.
4. G. Ecker and J. Honerkamp, CERN TH. 1348, Nucl. Phys., to be published.