Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV A. Bondar, A. Buzulutskov, A. Dolgov, E. Grishnyaev, S. Polosatkin, L. Shekhtman, E. Shemyakina and A. Sokolov EPL, 108 1 (2014) 12001 Published online: 03 October 2014 DOI: 10.1209/0295-5075/108/12001