Griffiths, David; Dyer, Christopher(The National Oceanographic and Atmospheric Administration, and Aguirre International, Maryland, United States, 1996)
Khoa, Sophie Nguyen; Smith, Laurence; Lorenzen, Kai; Garaway, Caroline; Perera, L. R.; de Silva, Shyamalie; Kumara, M. M .C.; Amarasinghe, Upali A.; Kularatne, M. G.; Bandara, H. M. S. Chandana(2003)