Reference
- Brain E. B. The Preporation of Decolcified Sections. Charles C Thomas, Springfield, Illinois 1966
- Dunlap H. L. Oogenesis in Ctenophora. Ph.D. Thesis, University of Washington, Seattle, Washington 1966
- Singla C. L. Ocelli of hydromedusae. Cell. Tiss. Res. 1974; 149: 413–429