Bennedsen, J. & Caspersen, M. E. (2004)
"Teaching Object-Oriented Programming – Towards Teaching a Systematic Programming Process".  In: Proceedings of the Eighth Workshop on Pedagogies and Tools for the Teaching and Learning of Object-Oriented Concepts, 18th European Conference on Object-Oriented Programming (ECOOP 2004), 14-18 June, 2004, Oslo, Norway. Downloaded from here.
Caspersen, M. E., Bennedsen, J. & Larsen, K. D. (2007)
"Mental Models and Programming Aptitude", Proceedings of the 12th Annual Conference on Innovation and Technology in Computer Science Education, ITiCSE 2007, Dundee, Scotland, 25 - 27 June 2007. Downloaded from here.
Tegmark, M. (1998)
"Is 'The Theory of Everything' Merely the Ultimate Ensemble Theory?" In Annals of Physics, 270, 1-51 (1998). Downloaded from here.