1. The origin of vertebrates;Berrill,1955
2. “Contact reactions” between xenogeneic or allogeneic coelomic cells of solitary ascidians;Fuke;Biol. Bull.,1980
3. Biology of ascidian, Halocynthia roretzi (Drashe), in Mutsu Bay. I. Differences of spawning time and external features;Numakunai;Bull. Mar. Biol. Stn. Asamushi,1973
4. Biology of ascidian, Halocynthia roretzi (Drashe), in Mutsu Bay. II. One of the three types which has the spawning season and the time differnt from two others;Numakunai;Bull. Mar. Biol. Stn. Asamushi,1974
5. Periodic spawning of three types of ascidian, Halocynthia roretzi (Drashe), under continuous light conditions;Numakunai;J. Exp. Zool.,1980