Isotropic quantum beats - I. Pulsed pump-probe detection P. Johansson, I. E. Mazets, O. S. Vasyutinskii and T. Hansson Eur. Phys. J. D, 31 1 (2004) 121-129 Published online: 31 August 2004 DOI: 10.1140/epjd/e2004-00112-5