Porell, Alcide. "Solvent extraction studies of scandium (III), yttrium (III) and lanthanum (III) with 2,2,6,6-tetramethyl-3,5-heptanedione /." Master's thesis, Ohio State University, 1967. http://rave.ohiolink.edu/etdc/view?acc_num=osu1731082895291786Chicago Manual of Style (17th edition)