Kreweras, Germain (1978), "Complexité et circuits eulériens dans les sommes tensorielles de graphes" [Complexity & Eulerian circuits in graphic tensorial sums], Journal of Combinatorial Theory, Series B (in French), 24 (2): 202–212, doi:10.1016/0095-8956(78)90021-7, MR0486144
Adams, Peter; Eggleton, Roger B.; MacDougall, James A. (2006), "Taxonomy of graphs of order 10"(PDF), Proceedings of the Thirty-Seventh Southeastern International Conference on Combinatorics, Graph Theory and Computing, Congressus Numerantium, 180: 65–80, MR2311249
Kreweras, Germain (1978), "Complexité et circuits eulériens dans les sommes tensorielles de graphes" [Complexity & Eulerian circuits in graphic tensorial sums], Journal of Combinatorial Theory, Series B (in French), 24 (2): 202–212, doi:10.1016/0095-8956(78)90021-7, MR0486144
Adams, Peter; Eggleton, Roger B.; MacDougall, James A. (2006), "Taxonomy of graphs of order 10"(PDF), Proceedings of the Thirty-Seventh Southeastern International Conference on Combinatorics, Graph Theory and Computing, Congressus Numerantium, 180: 65–80, MR2311249