@article{JCA_2013_20_4_JCA_2013_20_4_a8,
     author = {V. W. Th\"urey},
     title = {A {Generalization} of the {Euclidean} {Angle}},
     journal = {Journal of convex analysis},
     pages = {1025--1042},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {2013},
     url = {http://geodesic.mathdoc.fr/item/JCA_2013_20_4_JCA_2013_20_4_a8/}
}