@article{JCA_2019_26_3_JCA_2019_26_3_a17,
     author = {M. Niezgoda},
     title = {On {Convexity} and {\ensuremath{\psi}-Uniform} {Convexity} of {\protect\emph{G}-Invariant} {Functions} on an {Eaton} {Triple}},
     journal = {Journal of convex analysis},
     pages = {1001--1019},
     year = {2019},
     volume = {26},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JCA_2019_26_3_JCA_2019_26_3_a17/}
}