Francis T. Boesch, Charles L. Suffel, Ralph Tindell. The spanning subgraphs of eulerian graphs. Journal of Graph Theory, 1(1):79-84, 1977. [doi]
@article{BoeschST77, title = {The spanning subgraphs of eulerian graphs}, author = {Francis T. Boesch and Charles L. Suffel and Ralph Tindell}, year = {1977}, doi = {10.1002/jgt.3190010115}, url = {http://dx.doi.org/10.1002/jgt.3190010115}, researchr = {https://researchr.org/publication/BoeschST77}, cites = {0}, citedby = {0}, journal = {Journal of Graph Theory}, volume = {1}, number = {1}, pages = {79-84}, }