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@article{SF_1992__45_3_135167, author = {Y. Kobayashi}, title = {Note on compatible well orders on a free monoid.}, journal = {Semigroup forum}, pages = {23--25}, publisher = {mathdoc}, volume = {45}, number = {3}, year = {1992}, zbl = {0791.20065}, url = {http://geodesic.mathdoc.fr/item/SF_1992__45_3_135167/} }
Y. Kobayashi. Note on compatible well orders on a free monoid.. Semigroup forum, Tome 45 (1992) no. 3, pp. 23-25. http://geodesic.mathdoc.fr/item/SF_1992__45_3_135167/