On Transformations of Graded Matrices, with Applications to Stiff ODE's. Germund Dahlquist — 1985 Numerische Mathematik
Convergence and stability for a hyperbolic difference equation with analytic initial-values GERMUND DAHLQUIST — 1954 Mathematica Scandinavica
Convergence and stability in the numerical integration of ordinary differential equations GERMUND DAHLQUIST — 1956 Mathematica Scandinavica