Mushthofa, Mushthofa and Suripin, Suripin and Dyah Ari Wulandari, Wulandari and Mochammad Qomaruddin, Qomaruddin   Smart Cropping Pattern: A Systematic Study of Sustainable Agriculture Optimization Model.  International Journal of Engineering, Science and Information Technology, 5 (3).  pp. 491-499.  ISSN 2775-2674