Pokharel, K., Furness, J. W., Yao, Y., Blum, V., Irons, T. J. P., Teale, A. M., & Sun, J. (2022). Exact constraints and appropriate norms in machine-learned exchange-correlation functionals. Journal of Chemical Physics, 157(17), Article 174106. https://doi.org/10.1063/5.0111183