TY  - RPRT
TI  - A single variable variational approximation for a perturbed schrodinger equation.
AU  - W B Brown
AU  - P R Certain
PY  - 1967
DO  - 10.1073/pnas.57.5.1206
UR  - https://pubmed.ncbi.nlm.nih.gov/16591557/
ID  - 16591557
ER  -