Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) David Salzmann and Hideaki Takabe,Can X-ray lasers exist in astrophysical objects?,Publications of the Astronomical Society of Japan,00046264,Tokyo : Astronomical Society of Japan,2011,63,4,727-733,https://cir.nii.ac.jp/crid/1520010380126880384,