Strong Kerr-signals from optically isotropic ZnSe nanocrystals: a study using Mach-Zehnder principles D. Mohanta, S. Biswas and A. Choudhury Eur. Phys. J. D, 55 3 (2009) 679-683 Published online: 07 August 2009 DOI: 10.1140/epjd/e2009-00225-3