@article{JNSA_2012_5_5_a4,
     author = {El Frissi, Abdallah  and Bela{\"\i}di, Benharrat and Lareuch, Zinela\^abidine},
     title = {Jensen type inequalities for twice dierentiable functions },
     journal = {Journal of nonlinear sciences and its applications},
     pages = {350-356},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {2012},
     doi = {10.22436/jnsa.005.05.05},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.22436/jnsa.005.05.05/}
}