FERA IBRAHIM, et al. “ANTIBACTERIAL INVESTIGATED OF PHOSPHOLIPASE A2FROM THE SPINES VENOM OF CROWN OF THORNS STARFISH ACANTHASTER PLANCI”. International Journal of Pharma and Bio Sciences, vol. 4, no. 2, June 2013, pp. 1-5, https://ijpbs.net/index.php/journal/article/view/2263.