1. Google Books: books.google.com/books/about/Eulerian_Graphs_and_Related_Topics.html?id=uOEZAQAAIAAJ&utm_source=chatgpt.com 

2. scholarworks.wmich.edu: scholarworks.wmich.edu/honors_theses/278/?utm_source=chatgpt.com 

3. arXiv: arxiv.org/abs/1104.3046?utm_source=chatgpt.com 

4. SpringerLink: link.springer.com/article/10.1007/bf01902503?utm_source=chatgpt.com 

5. mathworld.wolfram.com: mathworld.wolfram.com/EulerianGraph.html?utm_source=chatgpt.com 

6. Wikipedia: en.wikipedia.org/wiki/Eulerian_path?utm_source=chatgpt.com

7. https://www.youtube.com/watch?v=5M-m62qTR-s 

8. https://www.youtube.com/watch?v=2hH-TfcrUl8