NANSATHIT, Aunchalee, Chanokporn PHAOSIRI, Paweena PONGDONTRI, Saksit CHANTHAI, and Chalerm RUANGVIRIYACHAI. 2011. “Synthesis, Isolation of Phenazine Derivatives and Their Antimicrobial Activities”. Walailak Journal of Science and Technology (WJST) 6 (1):79-91. https://wjst.wu.ac.th/index.php/wjst/article/view/74.