1. ABE, N, PALAO TROPICAL BIOLOGICAL STATION STUDIES 1: 73 (1937).
2. ATODA, K, SCIENCE REPORTS OF THE RESEARCH INSTITUTES, TOHOKU UNIVERSITY, SERIES D 20: 105 (1953).
3. Bothwell, A. M., Proceedings of the 4th International Coral Reef Symposium 2: 137 (1981).
4. Campbell, R. D., Reproduction of Marine Invertebrates 1: 133 (1974).
5. DONE, T.J., CORAL REEFS 1: 95 (1982).