TY  - RPRT
TI  - Cauchy data and Hadamard singularities in time-dependent backgrounds.
AU  - FD Mazzitelli
AU  - JP Paz
AU  - MA Castagnino
PY  - 1987
DO  - 10.1103/physrevd.36.2994
UR  - https://pubmed.ncbi.nlm.nih.gov/9958065/
ID  - 9958065
ER  -