Jimenez-casas, A., y A. Rodriguez-bernal. «Asymptotic Behaviour for a Phase Field Model in Higher Order Sobolev Spaces». Revista Matemática Complutense 15, no. 1 (enero 1, 2002): 213–248. https://doi.org/10.5209/rev_REMA.2002.v15.n1.16964.