Some new error estimates for Ritz-Galerkin methods with minimal regularity assumptions. - Alfred H. Schatz; Junping Wang (Math. Comput., 1996)

Pointwise error estimates and asymptotic error expansion inequalities for the finite element method on irregular grids: Part I. Global estimates. - Alfred H. Schatz (Math. Comput., 1998)

Pointwise Error Estimates and Asymptotic Error Expansion Inequalities for the Finite Element Method on Irregular Grids: Part II. Interior Estimates. - Alfred H. Schatz (SIAM J. Numer. Anal., 2000)

Asymptotically exact a posteriori estimators for the pointwise gradient error on each element in irregular meshes. Part 1: A smooth problem and globally quasi-uniform meshes. - Wolfgang Hoffmann; Alfred H. Schatz; Lars B. Wahlbin; Gabriel Wittum (Math. Comput., 2001)

Pointwise Error Estimates for Differences in Piecewise Linear Finite Element Approximations. - Alfred H. Schatz; Lars B. Wahlbin (SIAM J. Numer. Anal., 2003)

Asymptotically exact a posteriori estimators for the pointwise gradient error on each element in irregular meshes. Part II: The piecewise linear case. - Alfred H. Schatz; Lars B. Wahlbin (Math. Comput., 2004)

Perturbations of Forms and Error Estimates for the Finite Element Method at a Point, with an Application to Improved Superconvergence Error Estimates for Subspaces that Are Symmetric with Respect to a Point. - Alfred H. Schatz (SIAM J. Numer. Anal., 2005)

A new approach to Richardson extrapolation in the finite element method for second order elliptic problems. - Mohammad Asadzadeh; Alfred H. Schatz; Wolfgang L. Wendland (Math. Comput., 2009)

Hölder estimates for Green's functions on convex polyhedral domains and their applications to finite element methods. - Johnny Guzmán; Dmitriy Leykekhman; Jürgen Rossmann; Alfred H. Schatz (Numerische Mathematik, 2009)

On Positivity and Maximum-Norm Contractivity in Time Stepping Methods for Parabolic Equations. - Alfred H. Schatz; Vidar Thomée; Lars B. Wahlbin (Comput. Methods Appl. Math., 2010)

Asymptotic Error Expansions for the Finite Element Method for Second Order Elliptic Problems in RN, N>=2. I: Local Interior Expansions. - Mohammad Asadzadeh; Alfred H. Schatz; Wolfgang L. Wendland (SIAM J. Numer. Anal., 2010)

Local energy estimates for the finite element method on sharply varying grids. - Alan Demlow; Johnny Guzmán; Alfred H. Schatz (Math. Comput., 2011)

Best approximation property in the W1∞ norm for finite element methods on graded meshes. - Alan Demlow; Dmitriy Leykekhman; Alfred H. Schatz; Lars B. Wahlbin (Math. Comput., 2012)

Local A Posteriori Estimates on a Nonconvex Polygonal Domain. - JaEun Ku; Alfred H. Schatz (SIAM J. Numer. Anal., 2012)