@article{CRMATH_2015__353_5_427_0,
     author = {Sok\'o{\l}, Janusz and Nunokawa, Mamoru},
     title = {On some class of convex functions},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {427--431},
     publisher = {Elsevier},
     volume = {353},
     number = {5},
     year = {2015},
     doi = {10.1016/j.crma.2015.03.002},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/j.crma.2015.03.002/}
}