Tangent cones, starshape and convexity.
Borwein, J.M.
International Journal of Mathematics and Mathematical Sciences, Tome 1 (1978), p. 459-477 / Harvested from The Electronic Library of Mathematics
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Publié le : 1978-01-01
DOI : https://doi.org/10.1155/S0161171278000460
EUDML-ID : urn:eudml:doc:44854 
@article{03684427,
     title = {Tangent cones, starshape and convexity.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {1},
     year = {1978},
     pages = {459-477},
     doi = {10.1155/S0161171278000460},
     zbl = {0438.52009},
     language = {en},
     url = {http://dml.mathdoc.fr/item/03684427}
}

Borwein, J.M. Tangent cones, starshape and convexity.. International Journal of Mathematics and Mathematical Sciences, Tome 1 (1978) pp. 459-477. doi : 10.1155/S0161171278000460. http://gdmltest.u-ga.fr/item/03684427/