@article{10_4064_cm95_2_6,
     author = {Janusz Matkowski},
     title = {Affine and convex functions
 with respect to the logarithmic mean},
     journal = {Colloquium Mathematicum},
     pages = {217--230},
     publisher = {mathdoc},
     volume = {95},
     number = {2},
     year = {2003},
     doi = {10.4064/cm95-2-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm95-2-6/}
}