Citation: Iezzi, G.; Gatta, G. D.; Kockelmann, W.; Della Ventura, G.; Rinaldi, R.; Schafer, W.; Piccinini, M.; Gaillard, F. (2004). Low-T neutron powder-diffraction and synchrotron-radiation IR study of synthetic amphibole Na(NaMg)Mg5Si8O22(OH)2 Sample: T = 298 K. American Mineralogist, 90, pp. 695-700.