Laser and Emission Spectroscopy in H$_{2}$ and H$_{2}$-N$_{2}$ dc Discharges J. Amorin, G. Baravian, S. Bockel, A. Ricard et G. Sultan J. Phys. III France, 6 9 (1996) 1147-1155 DOI: 10.1051/jp3:1996174