Frequency conversion in laser-produced boron plasma using longitudinal pump scheme R. A. Ganeev, M. Suzuki, M. Baba and H. Kuroda Eur. Phys. J. D, 37 2 (2006) 255-259 Published online: 16 November 2005 DOI: 10.1140/epjd/e2005-00307-2