@article{10_4064_cm_36_1_143_151,
     author = {R. J. Libera and E. J. Z{\l}otkiewicz},
     title = {Loewner-type approximations for convex functions},
     journal = {Colloquium Mathematicum},
     pages = {143--151},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {1976},
     doi = {10.4064/cm-36-1-143-151},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-36-1-143-151/}
}