An easy proof of Ponizovski's theorem.
Gould, M.
Semigroup forum, Tome 14 (1977), p. 181-182 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1977-01-01
EUDML-ID : urn:eudml:doc:134248 
@article{GDZPPN001252372,
     title = {An easy proof of Ponizovski's theorem.},
     journal = {Semigroup forum},
     volume = {14},
     year = {1977},
     pages = {181-182},
     zbl = {0381.20050},
     url = {http://dml.mathdoc.fr/item/GDZPPN001252372}
}

Gould, M. An easy proof of Ponizovski's theorem.. Semigroup forum, Tome 14 (1977) pp. 181-182. http://gdmltest.u-ga.fr/item/GDZPPN001252372/