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                                 Abstract:An complex convolution method was introduced. Using this method the exact solutions of the three-dimensional electron shower equation in the non-homogeneous medium in which the density distribution function was continuous or finite discontinuous are obtained. These solutions included the approximation A and approximation B, the homogeneous and non-homogeneous medium case. Thus, the Nishimura-Kamata's classical results are extended.
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                        References
	
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