@article{oai:u-ryukyu.repo.nii.ac.jp:02004165,
 author = {Hosoya, Masahiko and 細谷, 将彦},
 issue = {31},
 journal = {琉球大学理学部紀要, Bulletin of the College of Science. University of the Ryukyus},
 month = {Mar},
 note = {A non-analytic free energy alters many conclusions conscerning the crystal anisotropy. Especially most of the "forbidden effects" (for example, piezoelectricity in crystal of the point group 432) are liberated and regarded only as "improbable effects". Under a certain simple assumption, all such effects can be classified into several classes according to their "improbability indices"., 紀要論文},
 pages = {9--11},
 title = {Theory of Crystal Anisotropy Based on a Non-Analytic Free Energy},
 year = {1981}
}