D. G. Afonso:
Semilinear equations in bounded cylinders: Morse index and bifurcation
  from one-dimensional solutions
(preprint) 2023

D. G. Afonso, A. Iacopetti, F. Pacella:
Overdetermined problems and relative Cheeger sets in unbounded domains
Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. 2023

D. G. Afonso, A. Iacopetti, F. Pacella:
Energy stability for a class of semilinear elliptic problems
Journal of Geometric Analysis 2024