1. Dwiratna, S., E. Suryadi and K.D. Kamaratih, 2016. Optimization of Rainfed Cropping Pattern on Cimanggung District, Sumedang Regency. Teknotan J., 10: 37-45.
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2. Pratama, M.P., D. Sophia and K. Amaru, 2015. Land Suitability Evaluation for Cilembu Sweet Potato in Sumedang using Geographic Information System Application. Teknotan J., .
3. Hadimulya, G., S. Dwiratna and K. Amaru, 2015. Land Suitability Evaluation of Slebong Snake Fruit using Geographic Information System. Teknotan J., .
4. Bafdal, N., S. Dwiratna and D.R. Kendarto, 2015. Runoff Management Technology For Integrated Dry Land Agriculture Research Center Jatinangor In West Java, Indonesia. Egypt. J. Desert Res., .
5. Bafdal, N., S. Dwiratna and D.R. Kendarto, 2014. Ratio Analysis of Catchment Area and Cultivated Area in Design Model of Runoff Management Integrated Farming on Dryland. J. Civil Eng., 21: 205-212.
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6. Dwiratna, S., G. Nawawi and C. Asdak, 2013. Rainfall Analysis And Its Application In Determining Dryland Schedule And Cropping Pattern in Bandung Regency. Bionatura J., 15: 29-34.