@article{RCM_1991__25_1-4_181847,
     author = {Jairo Charris and Gustavo Salas and Victoria Silva},
     title = {Polinomios ortogonales asociados con problemas espectrales},
     journal = {Revista colombiana de matematicas},
     pages = {35--80},
     publisher = {mathdoc},
     volume = {25},
     number = {1-4},
     year = {1991},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RCM_1991__25_1-4_181847/}
}