1. Gribov, V.N.: Nucl. Phys. B139, 1 (1978)
2. Zwanziger, D.: Nucl. Phys. B209, 336 (1982)
3. Dell'Antonio, G., Zwanziger, D.: Nucl. Phys. B326, 333 (1989)
4. Semenov-Tyan-Shanskii, M.A., Franke, V.A.: Zap. Nauch. Sem. Leningrad. Otdeleniya Matematicheskogo Instituta im. V. A. Steklov AN SSSR, Vol. 120, p. 159, 1982 (English translation: New York: Plenum Press 1986)
5. Dell'Antonio, G., Zwanziger, D.: Proceedings of the NATO Advanced Research Workshop on Probabilistic Methods in Quantum Field Theory and Quantum Gravity, Cargèse, August 21–27, 1989, Damgaard and Hueffel (eds.), p. 107. New York: Plenum Press