Quantification of Local Electric Field Changes at the Active Site of Cytochrome c Oxidase by Fourier Transform Infrared Spectroelectrochemical Titrations oleh Federico Baserga, Jovan Dragelj, Jovan Dragelj, Jacek Kozuch, Hendrik Mohrmann, Ernst-Walter Knapp, Sven T. Stripp, Joachim Heberle