D. Alikakos, Nicholas, and Giorgio Fusco. 2016. “Asymptotic Behavior and Rigidity Results for Symmetric Solutions of the Elliptic System Δu = W_u(u) ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 15 (special):809-36. https://doi.org/10.2422/2036-2145.201402_005.