@article{SIGMA_2012_8_a73,
     author = {Ricardo M\'endez-Fragoso and Eugenio Ley-Koo},
     title = {Ladder operators for {Lam\'e} spheroconal harmonic polynomials},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2012},
     volume = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2012_8_a73/}
}