Numerical Analysis of Partial Differential Equations S. Albertoni: Alcuni metodi di calcolo nella teoria della diffusione dei neutroni. I. Babuska: Optimization and numerical stability in computations. J.H. Bramble: Error estimates in elliptic boundary value problems. G. Capriz: The numerical approach to hydrodynamic problems. A. Dou: Energy inequalities in an elastic cylinder. T. Doupont: On the existence of an iterative method for the solution of elliptic difference equation with an improved work estimate. J. Douglas J.R. Cannon: The approximation of harmonic and parabolic functions of half spaces from interior data. B.E. Hubbard: Erro