1. Boundary crossing and boundary objects;Akkerman;Review of Educational Research,2011
2. Crossing boundaries between school and work during apprenticeships;Akkerman;Vocations and Learning: Studies in vocational and professional education,2012
3. Acquisition of cognitive skill;Anderson;Psychological Review,1982
4. Problem solving and learning;Anderson;American Psychologist,1993
5. Personality-suggestion;Baldwin;Psychological Review,1894