%0 Journal Article
%T Discovery of the astatine, radon, francium, and radium isotopes
%A C. Fry
%A M. Thoennessen
%J Physics
%D 2012
%I arXiv
%X Currently, thirty-nine astatine, thirty-nine radon, thirty-five francium, and thirty-four radium isotopes have so far been observed; the discovery of these isotopes is discussed. For each isotope a brief summary of the first refereed publication, including the production and identification method, is presented.
%U http://arxiv.org/abs/1205.5841v1