Pillinger, William. "Paramagnetic susceptibility and adiabatic demagnetization of F-centers in KCl and of chromic and ferric acetylacetonate at temperatures below 4.2ÌŠK /." Doctoral dissertation, Ohio State University, 1955. http://rave.ohiolink.edu/etdc/view?acc_num=osu1485792466322059Chicago Manual of Style (17th edition)