@article{MTA_2021_6_1_a3,
     author = {Gabriele Eichfelder,Johannes Jahn},
     title = {Optimality {Conditions} in {Discrete-Continuous} {Nonlinear} {Optimization}},
     journal = {Minimax theory and its applications},
     year = {2021},
     volume = {6},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MTA_2021_6_1_a3/}
}