@article{10_2298_PIM0271079S,
     author = {Seneta, E.},
     title = {Karamata's characterization theorem, {Feller,} and regular variation in probability theory.},
     journal = {Publications de l 'Institut Math\'ematique. Nouvelle S\'erie},
     pages = {79},
     publisher = {mathdoc},
     volume = {71(85)},
     year = {2002},
     doi = {10.2298/PIM0271079S},
     zbl = {1088.60008},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.2298/PIM0271079S/}
}