Jishnudev, M.A. & Poulose, J.P. & Sijo, P. & Kishor, T.G. (2023)
Accidental catch of Bull shark at Munambam Fisheries Harbour. Marine Fisheries Information Service, Technical and Extension Series, 257, 42

Sijo, P. (2013)
Rare bluntnose sixgill shark Hexanchus griseus landed at Sakthikulangara Fisheries Harbour, Kollam. Marine Fisheries Information Service, Technical and Extension Series, 215, 31

Sijo, P. (2011)
Landing of a pregnant female tiger shark, Galeocerdo cuvier at Cochin Fisheries Harbour. Marine Fisheries Information Service, 208, 35

Sijo, P. (2006)
Whale shark Rhiniodon typus landed at Kollam. Marine Fisheries Information Service, Technical and Extension Series, 190, 22