Thi Hai Yen Pham, Thi Kim Ngan Nguyen, Thi Thu Hien Chu, Thi Thu Ha Vu and Quoc Hung Le 2023. Pencil lead graphite electrochemically modified with polyglutamic acid as a sensor for detection of enrofloxacin in aqueous media. Vietnam Journal of Science, Technology and Engineering. 65, 3 (Sep. 2023), 44-49. DOI:https://doi.org/10.31276/VJSTE.65(3).44-49.