TY  - RPRT
TI  - Vacuum effects on interference in two-photon down conversion.
AU  - ZY Ou
AU  - LJ Wang
AU  - L Mandel
PY  - 1989
DO  - 10.1103/physreva.40.1428
UR  - https://pubmed.ncbi.nlm.nih.gov/9902277/
ID  - 9902277
ER  -