Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
C. T. Molloy,Calculation of the Directivity Index for Various Types of Radiators,The Journal of the Acoustical Society of America,0001-4966,Acoustical Society of America (ASA),1948-07-01,20,4,387-405,https://cir.nii.ac.jp/crid/1364233268321889408,https://doi.org/10.1121/1.1906390