On a problem of Pastijn and Petrich.
Trotter, P.C.
Semigroup forum, Tome 33 (1986), p. 249-252 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1986-01-01
EUDML-ID : urn:eudml:doc:134843 
@article{GDZPPN001258516,
     title = {On a problem of Pastijn and Petrich.},
     journal = {Semigroup forum},
     volume = {33},
     year = {1986},
     pages = {249-252},
     zbl = {0606.20053},
     url = {http://dml.mathdoc.fr/item/GDZPPN001258516}
}

Trotter, P.C. On a problem of Pastijn and Petrich.. Semigroup forum, Tome 33 (1986) pp. 249-252. http://gdmltest.u-ga.fr/item/GDZPPN001258516/