Somsuk N, Laosirihongthong T. Two-stage data envelopment analysis technique for evaluating internal supply chain efficiency. Eng Appl Sci Res [internet]. 2015 Jan. 7 [cited 2025 May 12];41(4):483-91. available from: https://ph01.tci-thaijo.org/index.php/easr/article/view/28308