@article{couceiro:hal-01826868, TITLE = {{Quasitrivial semigroups: Characterizations and enumerations}}, AUTHOR = {Couceiro, Miguel and Devillet, Jimmy and Marichal, Jean-Luc}, URL = {https://inria.hal.science/hal-01826868}, JOURNAL = {{Semigroup Forum}}, PUBLISHER = {{Springer Verlag}}, PAGES = {22}, YEAR = {2018}, PDF = {https://inria.hal.science/hal-01826868v1/file/QuasitrivialSemigroups.pdf}, HAL_ID = {hal-01826868}, HAL_VERSION = {v1}, }