@article{SIGMA_2016_12_a19,
     author = {Clotilde Mart{\'\i}nez and Miguel A. Pi\~nar},
     title = {Orthogonal {Polynomials} on the {Unit} {Ball} and {Fourth-Order} {Partial} {Differential} {Equations}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2016},
     volume = {12},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2016_12_a19/}
}