@article{10_4153_S0008439520000958,
     author = {Scandone, Raffaele and Baglini, Lorenzo Luperi and Simonov, Kyrylo},
     title = {A characterization of singular {Schr\"odinger} operators on the half-line},
     journal = {Canadian mathematical bulletin},
     pages = {923--941},
     year = {2021},
     volume = {64},
     number = {4},
     doi = {10.4153/S0008439520000958},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439520000958/}
}