Some Trigonometric Inequalities.
Steinig, J.
Elemente der Mathematik, Tome 27 (1972), p. 121-128 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1972-01-01
EUDML-ID : urn:eudml:doc:141078 
@article{GDZPPN00207835X,
     title = {Some Trigonometric Inequalities.},
     journal = {Elemente der Mathematik},
     volume = {27},
     year = {1972},
     pages = {121-128},
     zbl = {0266.50007},
     url = {http://dml.mathdoc.fr/item/GDZPPN00207835X}
}

Steinig, J. Some Trigonometric Inequalities.. Elemente der Mathematik, Tome 27 (1972) pp. 121-128. http://gdmltest.u-ga.fr/item/GDZPPN00207835X/