著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
,A unified framework for collision risk modelling in support of the manual on airspace planning methodology for the determination of spearation minima (Doc 9689),,International Civil Aviation Organization,2009,ICAO circular,,"9789292314286,9292314289",,https://cir.nii.ac.jp/crid/1130000797879358080