@article{KYB_2013_49_3_a4,
     author = {Mare\v{s}, Milan and Mesiar, Radko},
     title = {Information in vague data sources},
     journal = {Kybernetika},
     pages = {433--445},
     year = {2013},
     volume = {49},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2013_49_3_a4/}
}