@inproceedings{inproceedings, title = {{STERNHEIMER FACTORS AND ELECTRIC-FIELD-GRADIENT HYPERPOLARIZABILITIES FOR IONS IN CRYSTALS}}, url = {{}}, year = {{1994}}, month = {{1}}, author = {{FOWLER PW and KELLY HM}}, volume = {{49}}, journal = {{ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES}}, issue = {{1-2}}, pages = {{125-128}}, note = {{Accessed on 2025/05/31}}}