1. Armstrong, F. A. J, - 1961 - The determination of Silicate in sea water. J. mar. Biol. Ass. U.K., 30.
2. El-Maghraby, A. M. & Halim, Y., - 1959 - The plankton of Alexandria waters in 1957 - Preprint Int. Cong. of Oceanography-N.Y. 1959.
3. El-Maghraby, A. M., - 1961 - Seasonal Variations in length of some Marine Planktonic Copepods from Alexandria Region. Preprint No. 13, Symposium of Zooplankton - Copenhagen October 1961.
4. Notes and Memoirs;F. M. Ghazzawi,1936
5. Gurney, R., - 1927 - Report on the crustacea: Copepoda and Cladocera of the plankton. Zoological results of the Cambridge Expedition to the Suez Canal, 1924, in: Trans. Zool. Soc. London.