Magnetic and spectroscopic probes for FeOFe linkages in hemin systemsDavid H. O'KeeffeClyde H. Barlowet al.1975Bioinorganic Chemistry
Exchange coupling in binuclear oxy-bridged iron(III) protoporphyrin IX dimethyl esterThomas H. MossHenry R. Lillienthalet al.1972Journal of the Chemical Society, Chemical Communications