Critical macroscopic quantum effects in quantum nucleation J.-Q. Liang, W.-M. Liu, H. J. W. Müller-Kirsten, Y.-H. Nie and D. K. Park Europhys. Lett., 68 4 (2004) 473-479 Published online: 22 October 2004 DOI: 10.1209/epl/i2004-10232-4