Biju Longhinos & Nambiar, C. g. b. (2009). Geology and geochronology of silica sands of coastal plain of thiruvananthapuram district, kerala, india,with special reference to late quaternary environment (Thesis). Faculty of marine sciences, Cusat.

Biju Longhinos và C.G; guided by Nambiar. Geology and Geochronology of Silica Sands of Coastal Plain of Thiruvananthapuram District, Kerala, India,with Special Reference to Late Quaternary Environment (Thesis). Kochi: Faculty of marine sciences, Cusat, 2009.

Biju Longhinos và C.G; guided by Nambiar. Geology and Geochronology of Silica Sands of Coastal Plain of Thiruvananthapuram District, Kerala, India,with Special Reference to Late Quaternary Environment (Thesis). Faculty of marine sciences, Cusat, 2009.