Tac, V. V., and D. N. Hai. “CHLOROPHYLL CONCENTRATION ANOMALY IN COASTAL MARINE AREA OF VIETNAM SOUTH CENTRE RELATED TO ENSO PHENOMENON”. Vietnam Journal of Marine Science and Technology, vol. 18, no. 1, June 2018, pp. 70-78, doi:10.15625/1859-3097/18/1/8786.