Contributions to Discrete Mathematics
This paper presents infinitely many new examples of triangle-free uniquely 3-edge colorable cubic graphs. The only such graph previously known was given by Tutte in 1976.
Belcastro, Sarah-Marie and Haas, Ruth, "Triangle-free Uniquely 3-Edge Colorable Cubic Graphs" (2015). Mathematics and Statistics: Faculty Publications, Smith College, Northampton, MA.