On some properties of focal points.
Ferchichi, M.R. ; Djellit, I.
Discrete Dynamics in Nature and Society, Tome 2009 (2009), / Harvested from The Electronic Library of Mathematics
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Publié le : 2009-01-01
DOI : https://doi.org/10.1155/2009/646258
EUDML-ID : urn:eudml:doc:225883 
@article{05637382,
     title = {On some properties of focal points.},
     journal = {Discrete Dynamics in Nature and Society},
     volume = {2009},
     year = {2009},
     doi = {10.1155/2009/646258},
     zbl = {1196.54070},
     language = {en},
     url = {http://dml.mathdoc.fr/item/05637382}
}

Ferchichi, M.R.; Djellit, I. On some properties of focal points.. Discrete Dynamics in Nature and Society, Tome 2009 (2009) . doi : 10.1155/2009/646258. http://gdmltest.u-ga.fr/item/05637382/