K.  Wada, ?An electron microscope study of the formation of the periostracum of Pinctada martensii?, Journal of Electron Microscopy, vol. 17, p. 275, 1968.

I. K.  Kawakami and Yasuzumi, G., ?Electron microscope studies on the mantle of the pearl oyster Pinctada martensii Dunker. Preliminary report. The fine structure of the periostracum fixed with permanganate?, Journal of Electron Microscopy, vol. 13, pp. 119-123, 1964.

I. K.  Kawakami and Yasuzumi, G., ?Electron microscope studies on the mantle of the pearl oyster Pinctada martensii Dunker. Preliminary report. The fine structure of the periostracum fixed with permanganate?, Journal of Electron Microscopy, vol. 13, pp. 119-123, 1964.

K.  Wada, ?An electron microscope study of the formation of the periostracum of Pinctada martensii?, Journal of Electron Microscopy, vol. 17, p. 275, 1968.