Bi-(φ,ψ) convex sets.
Duca, D.I. ; Lupşa, L.
Mathematica Pannonica, Tome 14 (2003), p. 193-203 / Harvested from The Electronic Library of Mathematics
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Publié le : 2003-01-01
EUDML-ID : urn:eudml:doc:230292 
@article{02099127,
     title = {Bi-},
     journal = {Mathematica Pannonica},
     volume = {14},
     year = {2003},
     pages = {193-203},
     zbl = {1052.46003},
     language = {en},
     url = {http://dml.mathdoc.fr/item/02099127}
}

Duca, D.I.; Lupşa, L. Bi-. Mathematica Pannonica, Tome 14 (2003) pp. 193-203. http://gdmltest.u-ga.fr/item/02099127/