@article {1901.03309, archivePrefix = {arXiv}, eprint = {1901.03309}, primaryClass = {physics.chem-ph}, author = {Lixue Cheng and Matthew Welborn and Thomas F. Miller III}, title = {A Universal Density Matrix Functional from Molecular Orbital-Based Machine Learning: Transferability across Organic Molecules}, year = {2019}, url = {http://arxiv.org/abs/1901.03309} }