@misc{indiciae9f5c38ca2997, title = {Density-functional-theory softness kernel.}, author = {J Garza and J Robles}, year = {1993}, doi = {10.1103/physreva.47.2680}, url = {https://pubmed.ncbi.nlm.nih.gov/9909237/}, note = {Source identifier: 9909237} }