Liesbeth Kester Chris Lehnen Pascal W. M. Van Gerven Paul A. Kirschner Just-in-time, schematic supportive information presentation during cognitive skill acquisition. 93-112 2006 22 Computers in Human Behavior 1 http://dx.doi.org/10.1016/j.chb.2005.01.008 db/journals/chb/chb22.html#KesterLGK06