Yahya Algamal Z, زکریا, Abdul kareem Q, قمر. Generalized ridge estimator shrinkage estimation based on particle swarm optimization algorithm. IQJOSS [Internet]. 2025 Jun. 25 [cited 2025 Aug. 3];17(2):26-35. Available from: https://rjps.uomosul.edu.iq/index.php/stats/article/view/20766