2M LEHMANNA,P CHRISTENSENA,X DUA. Problem-oriented and project-based learning(POPBL) as an innovative learning strat- egy for sustainable development in engineering education[J]. Euro- pean Journal of Engineering Education,2008.
8M Lehmanna, P Christensena, X Dua. Problem - Oriented and Project- Based Learning (POPBL) as an innovative learning strategy for sustainable development in engineering education[ J ]. European Journal of Engineering Education, 2008, (3).
9Emilia Cotoi, Teodor Bodoasca, Lucia Catana. etc. Entre- preneurship European development strategy in the field of education [J]. Procedia Social and Behavioral Sciences,2011, (15).
10Einar A. Rasmussen, Roger Sorheim. Action - based entre- preneurship education[ J]. Technovation, 2006, ( 2 ).