Lista de

Cuspidal domains
2
"Finite element approximations in a non-Lipschitz domain: Part II" (2011) Acosta, G.; Armentano, M.G. Mathematics of Computation. 80(276):1949-1978
"Nonhomogeneous Neumann problem for the Poisson equation in domains with an external cusp" (2005) Acosta, G.; Armentano, M.G.; Durán, R.G.; Lombardi, A.L. Journal of Mathematical Analysis and Applications. 310(2):397-411