@article{KYB_1978_14_3_a1,
     author = {Aggarwal, N. L. and Picard, C. F.},
     title = {Functional equations and information measures with preference},
     journal = {Kybernetika},
     pages = {174--181},
     year = {1978},
     volume = {14},
     number = {3},
     mrnumber = {506647},
     zbl = {0385.94008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1978_14_3_a1/}
}