@article{MAN_1980__252_163455,
     author = {Rupert Lasser},
     title = {Almost {Periodic} {Functions} on {Hypergroups.}},
     journal = {Mathematische Annalen},
     pages = {183--196},
     publisher = {mathdoc},
     volume = {252},
     year = {1980},
     zbl = {0431.43007},
     url = {http://geodesic.mathdoc.fr/item/MAN_1980__252_163455/}
}