@article{JLT_2013_23_4_JLT_2013_23_4_a0,
     author = {M. R�sler and M. Voit },
     title = {Olshanski {Spherical} {Functions} for {Infinite} {Dimensional} {Motion} {Groups} of {Fixed} {Rank}},
     journal = {Journal of Lie theory},
     pages = {899--92},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {2013},
     url = {http://geodesic.mathdoc.fr/item/JLT_2013_23_4_JLT_2013_23_4_a0/}
}