Extremal length and Hölder continuity of conformal mappings. Raimo Näkki; Bruce Palka — 1986 Commentarii mathematici Helvetici
Quasiconformal circles and Lipschitz classes. Raimo Näkki; Bruce Palka — 1980 Commentarii mathematici Helvetici
Boundary regularity and the uniform convergence of quasiconformal mappings. Raimo Näkki; Bruce Palka — 1979 Commentarii mathematici Helvetici