@article{104951, author = {Cor P. Baayen and Zden\v ek Hedrl\'\i n}, title = {Commutative polynomial semigroups on a segment}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {004}, year = {1963}, pages = {173-179}, zbl = {0151.01904}, mrnumber = {0166769}, language = {en}, url = {http://dml.mathdoc.fr/item/104951} }
Baayen, Cor P.; Hedrlín, Zdeněk. Commutative polynomial semigroups on a segment. Commentationes Mathematicae Universitatis Carolinae, Tome 004 (1963) pp. 173-179. http://gdmltest.u-ga.fr/item/104951/
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