Can the Pion's Charge Radius be Large?RemoveDavid N. Levin and Susumu OkuboPhys. Rev. D 6, 3149 (1972)
Chiral Symmetry Breaking and the Cabibbo AngleRemoveH. Genz, J. Katz, L. R. Ram Mohan, and S. TaturPhys. Rev. D 6, 3259 (1972)