Pathi Devendra Kumar, Kaustav Aditya, Tauqueer Ahmad, Ankur Biswas, Surya Prakash Tripathi. A New Two Auxiliary Calibration Estimator of the Population Total in Two Stage Sampling Design using Nonlinear Constraints. JISAS. 2025;77(03):265-274. doi:10.56093/jisas.v77i03.171453