BIOLOGICAL CALCIFICATION : INVESTIGATION BY X-RAY ABSORPTION SPECTROSCOPY D.W.L. HUKINS, J.E. HARRIES, S.S. HASNAIN et C. HOLT J. Phys. Colloques, 47 C8 (1986) C8-1185-C8-1188 DOI: 10.1051/jphyscol:19868232