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Pipe networks analysis. Chenoweth H and Crawford C. Journal American Waterworks Association . 1974
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Hydraulic analysis of springkler irrigation system component using the finite element method. Bralts,V E,et al. Transactions of the ASAE . 1990
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Micro computer aided design of drip/trickle irrigation submain units, Proceeding of the Third International Drip/Trickle irrigation Congress, Freasno, U. Bralts,V E,et al. S. A . 1985