Saekhoo, Juthaphorn, and Pachitjanut Siripanich. “Application of Auxiliary Variable in Response Mean Estimation for Incomplete Longitudinal Data”. Thailand Statistician 7, no. 1 (May 28, 2015): 1–11. Accessed April 29, 2024. https://ph02.tci-thaijo.org/index.php/thaistat/article/view/34313.