El-Dahshan, E. A. and El-Bakry, S. Y. (2017) “EMPIRICAL EQUATION USING GMDH METHODOLOGY FOR THE CHARGED PARTICLES MULTIPLICITY DISTRIBUTION IN HADRONIC POSITRON-ELECTRON ANNIHILATION”, East European Journal of Physics, 4(3), pp. 18-25. doi: 10.26565/2312-4334-2017-3-02.