Porras-Vega, Stephania, et al. “Circular Dichroism and Fluorescence in the Evaluation of the Chemical-Physical and Biological Reference Material of Nimotuzumab”. Revista Cubana De Química, vol. 33, no. 1, Mar. 2021, pp. 3-21, https://cubanaquimica.uo.edu.cu/index.php/cq/article/view/5164.