@article{10_37236_8288,
     author = {Stijn Cambie and Ant\'onio Gir\~ao and Ross J. Kang},
     title = {VC dimension and a union theorem for set systems},
     journal = {The electronic journal of combinatorics},
     year = {2019},
     volume = {26},
     number = {3},
     doi = {10.37236/8288},
     zbl = {1475.05163},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/8288/}
}