@article{10_2298_PIM0694059B,
     author = {Buldygin, V.V. and Klesov, O.I. and Steinebach, J.G.},
     title = {On some extensions of {Karamata's} theory and their applications.},
     journal = {Publications de l 'Institut Math\'ematique. Nouvelle S\'erie},
     pages = {59},
     publisher = {mathdoc},
     volume = {80(94)},
     year = {2006},
     doi = {10.2298/PIM0694059B},
     zbl = {1199.26001},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.2298/PIM0694059B/}
}