Naïma El-Kechaï Christophe Després Proposing the Underlying Causes That Lead to the Trainee's Erroneous Actions to the Trainer. 41-55 2007 conf/ectel/2007 EC-TEL http://dx.doi.org/10.1007/978-3-540-75195-3_4 db/conf/ectel/ectel2007.html#El-KechaiD07