@article{SIGMA_2012_8_a79,
     author = {Christiane Quesne},
     title = {Novel enlarged shape invariance property and exactly solvable rational extensions of the {Rosen{\textendash}Morse} {II} and {Eckart} potentials},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2012},
     volume = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2012_8_a79/}
}