1. Ally M (2004) Designing effective learning objects for distance education. In: McGreal R (ed) Online education using learning objects. Routledge, London, pp 87–97
2. Castillo S, Ayala G (2008) ARMOLEO: an architecture for mobile learning objects. In: 18th international conference on electronics, communications and computers, IEEE Computer Society, Washington, pp 53–58
3. Churchill D (2008) Learning objects for educational applications via PDA technology. J Interact Learn Res 19(1):5
4. Cochrane T (2005) Interactive quicktime: developing and evaluating multimedia learning objects to enhance both face-to-face and distance e-learning environments. Interdisc J Knowl Learn Objects 1(1):33–54
5. Cruz-Flores R, López-Morteo G (2008) A Model for collaborative learning objects based on mobile devices. In: Mexican international conference on computer science, IEEE Computer Society, Los Alamitos, pp 89–95