Emelichev, Vladimir, and Dmitriy Podkopaev. “Conditions of Stability, Pseudostability and Quasi-Stability of the Pareto Set in a Vector Trajectorial Problem”. Rev. Anal. Numér. Théor. Approx. 27, no. 1 (February 1, 1998): 91–97. Accessed May 24, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1998-vol27-no1-art10.