Khemawoot, P., S. Fungwitthaya, N. Aswapokee, and S. Tiengrim. “Comparative in-Vitro Study of Killing Activities and Morphological Changes of Cefpirome, Cefepime, Imipenem and Meropenem Alone and in Combination Against Gram Negative Bacteria”. Journal of Basic and Applied Pharmacology, vol. 24, July 2015, p. 124, https://li01.tci-thaijo.org/index.php/JBAP/article/view/36539.