Purification and spectroscopic studies on catechol oxidases from Lycopus europaeus and Populus nigra: Evidence for a dinuclear copper center of type 3 and spectroscopic similarities to tyrosinase and hemocyanin - Annette Rompel; Helmut Fischer; Dirk Meiwes; K. Büldt-Karentzopoulos; Renée Dillinger; Felix Tuczek; Herbert Witzel; B. Krebs (JBIC Journal of Biological Inorganic Chemistry, 1999)