"Determination of Para-Phenylenediamine (PPD) in Henna Samples Collected from Libyan Local Markets Using Spectrophotometric Method". 2024. مجلة جامعة الزيتونة 13 (50): 527-38. https://palevioletred-snail-856794.hostingersite.com/index.php/azujournal/article/view/281.