@article{IM2_2002_66_5_a0,
     author = {Vit. V. Volchkov},
     title = {Functions with zero ball means on the quaternionic hyperbolic space},
     journal = {Izvestiya. Mathematics },
     pages = {875--903},
     publisher = {mathdoc},
     volume = {66},
     number = {5},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2002_66_5_a0/}
}