@article{bwmeta1.element.desklight-77b1b813-5848-4ce2-a8d4-91267662ff71,
author = {J. Zderkiewicz},
title = {Sur le rayon de $\beta$-convexit\'e de la famille $$\Sigma$*\_a$
},
journal = {Annales Polonici Mathematici},
volume = {33},
year = {1977},
pages = {39-42},
zbl = {0351.30006},
language = {fra},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-77b1b813-5848-4ce2-a8d4-91267662ff71}
}
J. Zderkiewicz. Sur le rayon de β-convexité de la famille $Σ*_a$
. Annales Polonici Mathematici, Tome 33 (1977) pp. 39-42. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-77b1b813-5848-4ce2-a8d4-91267662ff71/