TY  - RPRT
TI  - Double-null coordinates for the Vaidya metric.
AU  - B Waugh
AU  - K Lake
PY  - 1986
DO  - 10.1103/physrevd.34.2978
UR  - https://pubmed.ncbi.nlm.nih.gov/9957018/
ID  - 9957018
ER  -