@article{SIGMA_2023_19_a47,
     author = {Galliano Valent},
     title = {Koenigs {Theorem} and {Superintegrable} {Liouville} {Metrics}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2023},
     volume = {19},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2023_19_a47/}
}