Brădean, R. (1995). Variational approximation for a Dirichlet-Neumann problem of the heat conduction through rectangular plates.
Rev. Anal. Numér. Théor. Approx.
,
24
(1), 23-36.
https://ictp.acad.ro/jnaat/journal/article/view/1995-vol24-nos1-2-art3