You have access
An Improved Method of Predicting Extinction Coefficients for the Determination of Protein Concentration
Eric C. Hilario, Alan Stern, Charlie H. Wang, Yenny W. Vargas, Charles J. Morgan, Trevor E. Swartz and Thomas W. Patapoff
PDA Journal of Pharmaceutical Science and Technology March 2017, 71 (2) 127-135; DOI: https://doi.org/10.5731/pdajpst.2016.007120