TY - JOUR AU - Tabak, Barbara TI - A Geometric Characterization of Harmonic Diffeomorphisms Between Surfaces. JO - Mathematische Annalen PY - 1985 VL - 270 SP - 147 EP - 158 KW - Riemann surfaces; harmonic diffeomorphism; quadratic differential; foliations; conformal diffeomorphism UR - http://eudml.org/doc/182951 ER -