J. Lawrance, S. Jung, and C. Wiseman. Proceeding of the 44th ACM Technical Symposium on Computer Science Education, page 639--644. New York, NY, ACM, (2013)
C. Laxer, M. Daniels, {. Cajander, and M. Wollowski. Proceedings of the Eleventh Australasian Conference on Computing Education, 95, page 111--118. Australian Computer Society, Inc., (2009)
C. Leska, and J. Rabung. Proceedings of the 9th annual SIGCSE conference on Innovation and technology in computer science education, page 237--237. New York, NY, ACM, (2004)
W. Leung. Proceedings of the 3rd International Conference on Communication and Information Processing, page 82--86. New York, NY, ACM, (2017)https://doi.org/10.1145/3162957.3163010.
S. Leutenegger, and J. Edgington. Proceedings of the 38th SIGCSE technical symposium on Computer science education, page 115--118. New York, NY, ACM, (2007)