%0 Journal Article %T Predicting population age structures of China, India, and Vietnam by 2030 based on compositional data %A Huiwen Wang %A Yan Li %A Yigang Wei %A Zhenyu Jiang %A Zhichao Wang %J Archive of "PLoS ONE". %D 2019 %R 10.1371/journal.pone.0212772 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459537/