THE STATE OF MANGANESE IN THE PHOTOSYNTHETIC APPARATUS DETERMINED BY X-RAY ABSORPTION SPECTROSCOPY V.K. YACHANDRA, R.D. GUILES, A. McDERMOTT, R.D. BRITT, J. COLE, S.L. DEXHEIMER, K. SAUER et M.P. KLEIN J. Phys. Colloques, 47 C8 (1986) C8-1121-C8-1128 DOI: 10.1051/jphyscol:19868219