DIFFUSION THEORY OF THE POSITIVE COLUMN IN HYDROGEN GLOW DISCHARGES WITH VARIABLE DEGREE OF DISSOCIATION P. Michel, S. Pfau, A. Rutscher and R. Winkler J. Phys. Colloques, 40 C7 (1979) C7-133-C7-134 DOI: 10.1051/jphyscol:1979765