KUMAR, SUMAN, B K HOODA, SEEMA JAGGI, and RAJENDRA SINGH. “Use of Dummy Variables for Investigating Structural Stability in Fertilizer-Yield Response Models*”. The Indian Journal of Agricultural Sciences 78, no. 2 (January 5, 2011). Accessed October 27, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/4040.