Excessive Doppler broadening of the Hα line in a hollow cathode glow discharge - Radial distribution, influence of surface coverage and temperature effectN. M. Šišović, G. Lj. Majstorović and N. KonjevićEur. Phys. J. D, 41 1 (2007) 143-150DOI: https://doi.org/10.1140/epjd/e2006-00187-x