Greenberg, ShafriraLeznoff, Clifford C.2010-12-202010-12-201989Tetrahedron Lett., 1989, 30, 5555-5558.http://hdl.handle.net/10315/6444enThe Synthesis of a Monosubstituted and An Unsymmetrical Tetrasubstituted Phthalocyanine Using Binuclear PhthalocyaninesArticlehttp://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6THS-42HWVBP-BG-5&_cdi=5290&_user=866177&_pii=S0040403901937980&_origin=search&_coverDate=12/31/1989&_sk=999699958&view=c&wchp=dGLbVlz-zSkzV&md5=8826b3b7a60173ab7dcc9810a72a1bc9&ie=/sdarticle.pdf