Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Ichiro Hasegawa,Approximate Orbits of Ancient and Medieval Comets,Publications of the Astronomical Society of Japan,00046264,Tokyo : Astronomical Society of Japan,2002,54,6,1091-1099,https://cir.nii.ac.jp/crid/1522825129714582784,