Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) C. K. Chang and Ming‐Shang Kuo and Ching‐Bore Wang,Stacked double‐macrocyclic ligands II. Synthesis of cofacial diporphyrins,Journal of Heterocyclic Chemistry,0022-152X,Wiley,1977-08-04,14,5,943-945,https://cir.nii.ac.jp/crid/1363107370511141376,https://doi.org/10.1002/jhet.5570140546