@article{MET_1981__28_175824,
     author = {L. Losonczi},
     title = {A {Characterization} of {Entropies} of {Degree} a.},
     journal = {Metrika},
     pages = {237--244},
     year = {1981},
     volume = {28},
     zbl = {0469.94005},
     url = {http://geodesic.mathdoc.fr/item/MET_1981__28_175824/}
}