Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Takao Mizuno,On the Arm Structure and the Star Formation in M51,Publications of the Astronomical Society of Japan,00046264,Tokyo : Astronomical Society of Japan,1977,29,4,p795-811,https://cir.nii.ac.jp/crid/1524232504498042752,