Three-step laser excitation of the 6p3/2ns, nd, ng autoionizing Rydberg levels via the 6p5f 1/2[5/2]2 level of leadA. Ahad, A. Nadeem, S. A. Bhatti and M. A. BaigEur. Phys. J. D, 32 3 (2005) 271-276DOI: https://doi.org/10.1140/epjd/e2005-00012-2