Charles Santhanaraju, V., A. May Yen, O. Cheng Yi, and P. Siew Moi. “BIOLOGICALLY ACTIVE POLYBROMINATED INDOLES IN THE RED ALGA LAURENCIA SIMILIS FROM THE COASTAL WATERS OF SABAH (RHODOMELACEAE, CERAMIALES)”. Malaysian Journal of Science, vol. 23, no. 2, Aug. 2004, pp. 119-26, https://ajba.um.edu.my/index.php/MJS/article/view/8439.