1. Ashford, N. A., Hattis, D. and Murray, A. E.: 1977, “Industrial Prospects for Chitin and Protein from Shellfish Wastes”, MIT Sea Grant Report, MISG 77-3: MIT, Cambridge, MA.
2. Boischot, P., Durroux, M. and Sylvestre, G.: 1950, “Etude sur la fixation du fer et du manganese dans les sols calcaires”, Ann. Inst. Natl. Recherche Agron., [A]1, 307–315.
3. Carriker, M. R.: 1996, “The shell and ligament”, in: V.S. Kennedy, R.I.E. Newell, (eds.), The Eastern Oyster, Maryland Sea Grant Publishers, College Park, Maryland, USA, pp.75–159.
4. Calmano, W.: 1983, “Chemical extraction of heavy metals in polluted river sediments in central Europe, Sci. Total Envir., 28, 77–90.
5. Chaney R. L., Malik, M., Li, Y. M., Brown, S. L., Brewer, E. P., Angle, J. S. and Baker, A. J.: 1997, “Phytoremediation of soil metals”, Curr. Opin. Biotechnol., 8, 279–284.