@article{Das_j2022_actainform, author = {J{\"{u}}rgen~Dassow and Isma{\"{e}}l~Jecker}, title = {Operational complexity and pumping lemmas}, journal = actainform, year = {2022}, volume = 59, number = 4, pages = {337--355}, url = {https://doi.org/10.1007/s00236-022-00431-3} }