@article{SIGMA_2010_6_a96,
     author = {Orlando Ragnisco and Danilo Riglioni},
     title = {A~Family of {Exactly} {Solvable} {Radial} {Quantum} {Systems} on {Space} of {Non-Constant} {Curvature} with {Accidental} {Degeneracy} in the {Spectrum}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2010},
     volume = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2010_6_a96/}
}