4Martin Fischer,Waldemar Bauer.Competing approaches towards work process orientation in German curriculum development,European journal of vocational training[J].No. 40 - 2007/1: 140-157.
5Marcel van der Klink,Jo Boon,Kathleen Schlusmans.Competences and vocational higher education: Now and in future [J].European journal of vocational training, No 40-2007/1,67-82.