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2. ASTM (1986a). Standard D2574–86. American Society for Testing and Materials, Philadelphia, USA.
3. ASTM (1986b). Standard D3273–86. American Society for Testing and Materials, Philadelphia, USA.
4. Barry, S., Bravery, AF. & Coleman, L.J. (1977). Int. Biodeter. Bull, 13 (2) 51–7.
5. Bech-Andersen, J. (1981). In Biodeterioration 5, ed. TA. Oxley & S. Barry. John Wiley, New York.