A. Pratheep Kumar, Mohaideen, K. Khaja, Alariqi, S. A. S., and Singh, R. Pal, ?Preparation and characterization of bioceramic nanocomposites based on hydroxyapatite (HA) and carboxymethyl cellulose (CMC)?, Macromolecular Research, vol. 18, no. 12, pp. 1160-1167, 2010.