Hyun SW, Wong WK, Yang Y. VNM: An R Package for Finding Multiple-Objective Optimal Designs for the 4-Parameter Logistic Model. J. Stat. Soft. [Internet]. 2018 Oct. 3 [cited 2024 Nov. 21];83(5):1-19. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v083i05