Input, process, and learning in primary and lower secondary schools : a systematic review carried out for the Nordic Indicator Workgroup (DNI)
Sogaard Larsen, Michael ; Uljens, Michael ; Eiliv, Trond ; Holm, Anders ; Fibaek Laursen, Per ; Elstad, Eyvind ; Nordenbo, Sven Erik ; Scheerens, Jaap - 2010 - ENG