Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) M. TACHIKI and M. C. LEE and R. A. TREDER and M. LEVY,Ultrasonic Identification of a New Spin-Ordering Phase Transition in Holmium(Physics),"Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy",0040-8808,Tohoku University,1976,,26,352-352,https://cir.nii.ac.jp/crid/1574231876708562304,