@misc{Campbell-Plump20b, author = {Graham Campbell and Detlef Plump}, title = {Confluence up to Garbage}, year = {2020}, note = {Presented at the 13th International Conference on Graph Transformation ({ICGT} 2020)}, url = {https://cdn.gjcampbell.co.uk/2020/Confluence-Garbage-Handouts.pdf}, }