@article{fairbanks-2026-doubly, title={Doubly Weak Double Categories}, volume={34}, ISSN={1572-9095}, url={http://dx.doi.org/10.1007/s10485-026-09863-1}, DOI={10.1007/s10485-026-09863-1}, number={4}, journal={Applied Categorical Structures}, publisher={Springer Science and Business Media LLC}, author={Fairbanks, Aaron David and Shulman, Michael}, year={2026}, month=May }