Characterization of the active substances in water conditioned by the coralline red alga Corallina pilulifera as inducers of metamorphosis in larvae of the sea urchin Anthocidaris crassispina - Jing-Yu, Li; Siti Akmar Khadijah, Ab Rahim; Cyril Glenn, Satuito; Hitoshi, Kitamura (2004)