J. F. Babadjian, R. Llerena:
Mixed boundary conditions as limits of dissipative boundary conditions in dynamic perfect plasticity
Journal of Convex Analysis (Accepted Paper) p. 23, 2022

R. Llerena, P. Piovano:
Existence of minimizers for a two-phase free boundary problem  with coherent and incoherent interfaces
(Submitted Paper) p. 62, 2023

R. Llerena, P. Piovano:
Solutions for a free-boundary problem modeling  multilayer films with coherent and incoherent interfaces
(Submitted Paper) p. 27, 2024

R. Llerena:
Solutions for a two-phase free-boundary problem and for dynamic perfect elasto-plasticity
(Ph.D. Thesis) p. 159, 2024