Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) FUJIWARA Hirofumi,Spatial Coherence of Laser Light with Multi-Mode Oscillations,Oyo Buturi,03698009,The Japan Society of Applied Physics,1971,40,3,281-286,https://cir.nii.ac.jp/crid/1390282679606569344,https://doi.org/10.11470/oubutsu1932.40.281