Suryaningsih, Siti. “Analysis of Sialic Acid and Sphingomyelin of Brain of Mice by Using Spectrophotometer and Hplc”. Journal of Asian Scientific Research 2, no. 9 (September 15, 2012): 478–490. Accessed July 3, 2024. https://archive.aessweb.com/index.php/5003/article/view/3379.