@misc{indiciae37fa542e8f92, title = {Null-strut calculus. I. Kinematics.}, author = {A Kheyfets and NJ LaFave and WA Miller}, year = {1990}, doi = {10.1103/physrevd.41.3628}, url = {https://pubmed.ncbi.nlm.nih.gov/10012307/}, note = {Source identifier: 10012307} }