Amel Bouzeghoub Marie Buffat Alda Lopes Gançarski Claire Lecocq Abir Benjemaa Mouna Selmi Katherine Maillet Search and Composition of Learning Objects in a Visual Environment. 763-768 2009 EC-TEL http://dx.doi.org/10.1007/978-3-642-04636-0_81 conf/ectel/2009 db/conf/ectel/ectel2009.html#BouzeghoubBGLBSM09