@article{KYB_1981__17_5_a4,
     author = {Kannappan, PL.},
     title = {On some functional equations from additive and nonadditive measures. {IV.}},
     journal = {Kybernetika},
     pages = {394--400},
     publisher = {mathdoc},
     volume = {17},
     number = {5},
     year = {1981},
     mrnumber = {648211},
     zbl = {0468.39004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1981__17_5_a4/}
}