TY  - RPRT
TI  - Quantum field theory with null-fronted metrics.
AU  - O Levin
AU  - A Peres
PY  - 1994
DO  - 10.1103/physrevd.50.7421
UR  - https://pubmed.ncbi.nlm.nih.gov/10017726/
ID  - 10017726
ER  -