@misc{indiciaef86cb02f56d2, title = {Fractionation phenomena in activity from an underground nuclear explosion.}, author = {G Persson}, year = {1969}, doi = {10.1097/00004032-196904000-00013}, url = {https://pubmed.ncbi.nlm.nih.gov/5787375/}, note = {Source identifier: 5787375} }