TY  - RPRT
TI  - Projective Differentiation in Spinors.
AU  - O Veblen
AU  - A H Taub
PY  - 1934
DO  - 10.1073/pnas.20.1.85
UR  - https://pubmed.ncbi.nlm.nih.gov/16587847/
ID  - 16587847
ER  -