Ke, Zhiyang, Han Guo, Xi Zhu, Yun Jin, and Yuan Huang. “Efficient Peroral Delivery of Insulin via Vitamin B12 Modified Trimethyl Chitosan Nanoparticles”. Journal of Pharmacy & Pharmaceutical Sciences 18, no. 2 (May 10, 2015): 155–170. Accessed August 20, 2024. https://journals.library.ualberta.ca/jpps/index.php/JPPS/article/view/23425.