<https://www.carpathian.cunbm.utcluj.ro/article/the-non-existence-of-convex-configuration-for-a-given-set-of-vertex-norm-in-two-dimensional-space/>
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<https://www.carpathian.cunbm.utcluj.ro/article/the-non-existence-of-convex-configuration-for-a-given-set-of-vertex-norm-in-two-dimensional-space/>