title: Ionizable Calixarene-Crown Ethers with High Selectivity for Radium over Light Alkaline Earth Metal Ions.
authors.affiliation: Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343.
authors.forename: Xiaoyuan
authors.initials: X
authors.lastname: Chen
authors.forename: Min
authors.initials: M
authors.lastname: Ji
authors.forename: Darrell R
authors.initials: DR
authors.lastname: Fisher
authors.forename: Chien M
authors.initials: CM
authors.lastname: Wai