On a problem by Shapiro.
Freidkin, E.S. ; Freidkin, S.A.
Elemente der Mathematik, Tome 45 (1990), p. 137-139 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1990-01-01
EUDML-ID : urn:eudml:doc:141491 
@article{GDZPPN002082578,
     title = {On a problem by Shapiro.},
     journal = {Elemente der Mathematik},
     volume = {45},
     year = {1990},
     pages = {137-139},
     url = {http://dml.mathdoc.fr/item/GDZPPN002082578}
}

Freidkin, E.S.; Freidkin, S.A. On a problem by Shapiro.. Elemente der Mathematik, Tome 45 (1990) pp. 137-139. http://gdmltest.u-ga.fr/item/GDZPPN002082578/