1. Biliński, S.: Ultrastructure of annulate lamellae in the oocytes and trophocytes of Tetrodontophora bielanensis (Waga) (Collembola). Acta Biol. Crac., Zool. 17, 177–180 (1974)
2. Biliński, S.: Origin of dictyosomes in the oocytes of Tetrodontophora bielanensis (Waga) (Collembola). Acta Biol. Crac., Zool. 18, 125–129 (1975)
3. Boyer, B.C.: Ultrastructural studies of differentiation in the oocyte of the polyclad turbellarian, Prostheceraeus floridanus. J. Morph. 136, 273–295 (1972)
4. Cantacuzène, A., Martoja, R.: Origine des enclaves vitellines de l'oocyte d'un Insecte Thysanoure, Petrobius maritimus. C. R. Acad. Sci. (Paris) 274, 1723–1726 (1972)
5. Dumont, J.N.: Oogenesis in the annelid Enchytraeus albidus with special reference to the origin and cytochemistry of yolk. J. Morph. 129, 317–343 (1969)