The role of recollection in evaluative conditioning
G. Halbeisen, K. Blask, R. Weil, E. Walther, Journal of Experimental Social Psychology 55 (2014) 162–168.

At the crossroads: Attention, contingency awareness, and evaluative conditioning
K. Blask, E. Walther, G. Halbeisen, R. Weil, Learning and Motivation 43 (2012) 99–106.