1. Performance of center pivot sprinkler irrigation system operating at reduced pressures;Ali;ASAE paper 78-2005,1978
2. Low trajectory sprinkler patterns and evaporation loss;Ali;ASAE paper 81-2085,1981
3. Test Procedures for determining the Uniformity of Water Distribution of Center Pivot;ASAE,1987
4. Effect of trajectory angle on performance of sprinklers in wind;Bernuth;J. Irrig. Drain. Div., ASCE,1988
5. Irrigation by sprinkling;Christiansen,1942