Balachandran, V. K., Rajagopalan, M. S., & Pillai, V. K. (2011). CHLOROPHYLL a AND PHEO - PIGMENT AS INDICES OF BIOLOGICAL PRODUCTIVITY IN THE INSHORE SURFACE WATERS OFF COCHIN. Indian Journal of Fisheries, 36(3), 227-237. https://epubs.icar.org.in/index.php/IJF/article/view/10641