A posteriori error identities for nonlinear variational problems - Neittaanmäki, Pekka; Repin, Sergey; Tietotekniikan laitos; Department of Mathematical Information Technology; Tietotekniikka; Mathematical Information Technology (Annals of the Acacemy of Romanian Scientists : Mathematics and Its Applications, 2015)
Keywords: estimates of deviations from the exact solution; convex variation problems; error measures for nonlinear problems