A semantic web-based authoring tool to facilitate the planning of collaborative learning scenarios compliant with learning theories - Isotani, Seiji; Mizoguchi, Riichiro; Isotani, Sadao; Capeli, Olimpio Murilo; Isotani, Naoko; Albuquerque, Antonio Roberto Pereira Leite de; Bittencourt, Ig I.; Jaques, Patrícia (Computers and Education, 2013)