@misc{indiciae26f8e96f1538, title = {Optical-frequency conversion in gaseous media.}, author = {A Lago and G Hilber and R Wallenstein}, year = {1987}, doi = {10.1103/physreva.36.3827}, url = {https://pubmed.ncbi.nlm.nih.gov/9899318/}, note = {Source identifier: 9899318} }