A simple proof of Schipp's theorem.
Ren, Yanbo ; Ren, Junyan
JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 8 (2007), / Harvested from The Electronic Library of Mathematics
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Publié le : 2007-01-01
EUDML-ID : urn:eudml:doc:129080 
@article{05262075,
     title = {A simple proof of Schipp's theorem.},
     journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
     volume = {8},
     year = {2007},
     zbl = {1140.60319},
     language = {en},
     url = {http://dml.mathdoc.fr/item/05262075}
}

Ren, Yanbo; Ren, Junyan. A simple proof of Schipp's theorem.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 8 (2007) . http://gdmltest.u-ga.fr/item/05262075/