@misc{indiciae2c61f46b0324, title = {THE EINSTEIN GENERALIZED RIEMANNIAN GEOMETRY.}, author = {L P Eisenhart}, year = {1963}, doi = {10.1073/pnas.50.2.190}, url = {https://pubmed.ncbi.nlm.nih.gov/16591110/}, note = {Source identifier: 16591110} }