@misc{indiciaeff7f0066261e, title = {Multichannel quantum-defect theory and an equivalent N-level system.}, author = {WE Cooke and CL Cromer}, year = {1985}, doi = {10.1103/physreva.32.2725}, url = {https://pubmed.ncbi.nlm.nih.gov/9896412/}, note = {Source identifier: 9896412} }