TY - JOUR T1 - Author Index to Volume 13 JO - Advances in Applied Mathematics and Mechanics VL - 6 SP - 1575 EP - 1577 PY - 2021 DA - 2021/11 SN - 13 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/aamm/19960.html KW - AB -