Feldman Albert, Beetz Charles P, Drory Michael, Holly Sandor
National Institute of Standards and Technology, Gaithersburg, MD 20899.
Advanced Technology Materials, 7 Commerce Dr., Danbury, CT 06810.
J Res Natl Inst Stand Technol. 1992 May-Jun;97(3):387-391. doi: 10.6028/jres.097.017.