@article{JCA_2021_28_1_JCA_2021_28_1_a8,
     author = {Q. Guo and Y. Peng},
     title = {Spherically {Convex} {Sets} and {Spherically} {Convex} {Functions}},
     journal = {Journal of convex analysis},
     pages = {103--122},
     year = {2021},
     volume = {28},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/JCA_2021_28_1_JCA_2021_28_1_a8/}
}