@article{JCA_2023_30_1_JCA_2023_30_1_a14,
     author = {A. Brojbeanu and C. Pintea},
     title = {Properties of the {Level} {Sets} of {Some} {Products} of {Functions}},
     journal = {Journal of convex analysis},
     pages = {271--294},
     year = {2023},
     volume = {30},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/JCA_2023_30_1_JCA_2023_30_1_a14/}
}