@article{JCA_2020_27_2_JCA_2020_27_2_a14,
     author = {L. Vesely and L. Zaj{\'\i}cek},
     title = {On the {Differentiability} of {Saddle} and {Biconvex} {Functions} and {Operators}},
     journal = {Journal of convex analysis},
     pages = {705--731},
     year = {2020},
     volume = {27},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2020_27_2_JCA_2020_27_2_a14/}
}