Transition from diffuse to constricted low current discharge in argon S. Zivanov, J. Zivkovic, I. Stefanovic, S. Vrhovac and Z. Lj. Petrovic Eur. Phys. J. AP, 11 1 (2000) 59-69 Published online: 15 July 2000 DOI: 10.1051/epjap:2000145