Kleefeld, Frieder. “Kurt Symanzik—a Stable Fixed Point Beyond Triviality”. Journal of Physics A: Mathematical and General, vol. 39, no. 1, 2005, pp. L9-L15, https://doi.org/10.1088/0305-4470/39/1/l02.
Kleefeld, F. (2005). Kurt Symanzik—a stable fixed point beyond triviality. Journal of Physics A: Mathematical and General, 39(1), L9-L15. https://doi.org/10.1088/0305-4470/39/1/l02
Kleefeld F. Kurt Symanzik—a stable fixed point beyond triviality. Journal of Physics A: Mathematical and General. 2005;39(1):L9-L15.