On the fundamental double four-spiral semigroup.
Grillet, Pierre Antoine
Bulletin of the Belgian Mathematical Society - Simon Stevin, Tome 3 (1996), p. 201-208 / Harvested from The Electronic Library of Mathematics
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Publié le : 1996-01-01
EUDML-ID : urn:eudml:doc:118873 
@article{00885639,
     title = {On the fundamental double four-spiral semigroup.},
     journal = {Bulletin of the Belgian Mathematical Society - Simon Stevin},
     volume = {3},
     year = {1996},
     pages = {201-208},
     zbl = {0847.20059},
     language = {en},
     url = {http://dml.mathdoc.fr/item/00885639}
}

Grillet, Pierre Antoine. On the fundamental double four-spiral semigroup.. Bulletin of the Belgian Mathematical Society - Simon Stevin, Tome 3 (1996) pp. 201-208. http://gdmltest.u-ga.fr/item/00885639/