Zyada, F., H. A. Hussein, H. Fathy, S. M. A. Mawla, and R. E. A. and Hadidyb,
"Shyness and sociability in a sample of Egyptian patients with schizophrenia and its relation to resting frontal EEG ",
Middle East Current Psychiatry 2011, , vol. 18:, pp. 226–230, 2011.