The high-energy critical minimum in elastic electron scattering by argon A. R. Milosavljević, S. Telega, D. Šević, J. E. Sienkiewicz and B. P. Marinković Eur. Phys. J. D, 29 3 (2004) 329-336 Published online: 20 April 2004 DOI: 10.1140/epjd/e2004-00057-7