Refinements, generalizations, and applications of Jordan's inequality and related problems.
Qi, Feng ; Niu, Da-Wei ; Guo, Bai-Ni
Journal of Inequalities and Applications [electronic only], Tome 2009 (2009), / Harvested from The Electronic Library of Mathematics
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Publié le : 2009-01-01
DOI : https://doi.org/10.1155/2009/271923
EUDML-ID : urn:eudml:doc:130925 
@article{05624531,
     title = {Refinements, generalizations, and applications of Jordan's inequality and related problems.},
     journal = {Journal of Inequalities and Applications [electronic only]},
     volume = {2009},
     year = {2009},
     doi = {10.1155/2009/271923},
     zbl = {1175.26048},
     language = {en},
     url = {http://dml.mathdoc.fr/item/05624531}
}

Qi, Feng; Niu, Da-Wei; Guo, Bai-Ni. Refinements, generalizations, and applications of Jordan's inequality and related problems.. Journal of Inequalities and Applications [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/271923. http://gdmltest.u-ga.fr/item/05624531/