Anna Eckerdal, Michael Thuné. Novice Java programmers conceptions of object and class , and variation theory. In José C. Cunha, William M. Fleischman, Viera K. Proulx, João Lourenço, editors, Proceedings of the 10th Annual SIGCSE Conference on Innovation and Technology in Computer Science Education, ITiCSE 2005, Caparica, Portugal, June 27-29, 2005. pages 89-93, ACM, 2005. [doi]
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