1. Abraham, A. 1967. The influence of environmental factors on the neurosecretory activity of the water beetle Dytiscus marginalis. Rev. Roumaine Biol. Ser. Zool. 11: 25?33.
2. Abraham, A. 1968. Neurosecretory activity in the brain of the water beetle Dytiscus marginalis. Acta Anat. 65: 435?446.
3. Barde, Surekha P. 1979. Studies on the postembryonic development of nervous and neuroendocrine system of Dineutes incus Aube (Gyrinidae: Coleoptera) Univ. Poona, Ph.D. Thesis, p. 185.
4. Beattie, T. M. 1971. Histology, histochemistry and ultrastructure of neurosecretory cells in the optic lobe of the cockroach, Periplaneta americana. J. Insect Physiol. 17: 1843?1855.
5. Besse, N. de. 1967. Neurosecretion dans la chaine nerveuse ventrale de deux blattes, Leucophaea maderae (F) et Periplaneta americana (L). Bull. Soc. Zool. Fr. 92: 73?86.