erc: who: Lange, R. what: Chernobyl source term, atmospheric dispersion, and dose estimation when: 19880201 where: https://digital.library.unt.edu/ark:/67531/metadc1060364/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/