Problems #51 and #52.
Fuchssteiner, B.
Semigroup forum, Tome 12 (1976), p. 281 / Harvested from Göttinger Digitalisierungszentrum
Access to full text
Publié le : 1976-01-01
EUDML-ID : urn:eudml:doc:134222 
@article{GDZPPN001251813,
     title = {Problems \#51 and \#52.},
     journal = {Semigroup forum},
     volume = {12},
     year = {1976},
     pages = {281-281},
     url = {http://dml.mathdoc.fr/item/GDZPPN001251813}
}

Fuchssteiner, B. Problems #51 and #52.. Semigroup forum, Tome 12 (1976) p. 281. http://gdmltest.u-ga.fr/item/GDZPPN001251813/