Scaling of vortex transport properties and nonlinear ac response of high-temperature superconductors Y. Wang, H. D. Chen, D. L. Yin, K. X. Chen, G. Lu, W. P. Bai and C. Y. Li Eur. Phys. J. B, 15 2 (2000) 221-225 Published online: 15 May 2000 DOI: 10.1007/s100510051119