Experimental study of speed-dependent collisional effects of He and Ne on the 687.1 nm argon line A. Bielski, S. Brym, R. Ciuryło and J. Szudy Eur. Phys. J. D, 8 2 (2000) 177-187 Published online: 15 February 2000 DOI: 10.1007/s100530050024