Jacob Perrenet, Jan Friso Groote, Eric Kaasenbrood. Exploring students understanding of the concept of algorithm: levels of abstraction. 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 64-68, ACM, 2005. [doi]
Abstract is missing.