@article{AM2_1997__54_3_137691,
     author = {B.R. Ebanks and P.K. Sahoo and P. Kannappan},
     title = {Characterizations of sum form information measures on open domains.},
     journal = {Aequationes mathematicae},
     pages = {1--30},
     publisher = {mathdoc},
     volume = {54},
     number = {3},
     year = {1997},
     zbl = {0880.39019},
     url = {http://geodesic.mathdoc.fr/item/AM2_1997__54_3_137691/}
}