@article{JCA_2020_27_4_JCA_2020_27_4_a6,
     author = {L. M. Del Pezzo and N. Frevenza and J. D. Rossi},
     title = {Convex {Envelopes} on {Trees}},
     journal = {Journal of convex analysis},
     pages = {1195--1218},
     year = {2020},
     volume = {27},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/JCA_2020_27_4_JCA_2020_27_4_a6/}
}