Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1997__54_2_135520, author = {A. Cherubini and J. Meakin and B. Piochi}, title = {Amalgams of free inverse semigroups.}, journal = {Semigroup forum}, pages = {199--220}, publisher = {mathdoc}, volume = {54}, number = {2}, year = {1997}, zbl = {0872.20049}, url = {http://geodesic.mathdoc.fr/item/SF_1997__54_2_135520/} }
A. Cherubini; J. Meakin; B. Piochi. Amalgams of free inverse semigroups.. Semigroup forum, Tome 54 (1997) no. 2, pp. 199-220. http://geodesic.mathdoc.fr/item/SF_1997__54_2_135520/