Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) David. Shemin and Selma. Kumin,THE MECHANISM OF PORPHYRIN FORMATION,Journal of Biological Chemistry,0021-9258,Elsevier BV,1952-10,198,2,827-837,https://cir.nii.ac.jp/crid/1360292620157647360,https://doi.org/10.1016/s0021-9258(18)55541-1