TY  - JOUR
AU  - Bush, Michael
AU  - Frymark, Dale
AU  - Liaw, Constanze
TI  - Singular boundary conditions for Sturm–Liouville operators via perturbation theory
JO  - Canadian journal of mathematics
PY  - 2023
SP  - 1110
EP  - 1146
VL  - 75
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/S0008414X22000293/
DO  - 10.4153/S0008414X22000293
ID  - 10_4153_S0008414X22000293
ER  -