@misc{indiciaec7411ebd21ad, title = {Extrapolation of cross-section data to zero energy for long-range effective potentials.}, author = {Omalley, T. F. and Oppenheim Berger, R. and Spruch, L.}, year = {1965}, url = {https://ntrs.nasa.gov/citations/19650035212}, note = {Source identifier: 19650035212} }