@article{iiasa5965,
           title = {An abstract extremal principle with applications to welfare economics},
       publisher = {Elsevier},
            year = {2000},
           pages = {187--216},
         journal = {Journal of Mathematical Analysis and Applications},
             url = {https://pure.iiasa.ac.at/id/eprint/5965/},
            issn = {1096-0813},
          author = {Mordukhovich, B. S.}
}