Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Ishiwata Tsuneo and Kamakura Tomoo,Model equation of directive sound beams using the oblate spheroidal coordinate system,THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN,03694232,Acoustical Society of Japan,1999,55,12,832-837,https://cir.nii.ac.jp/crid/1390282681544062592,https://doi.org/10.20697/jasj.55.12_832