Riemann Surfaces with Shortest Geodesic of Maximal Length. P. Schmutz (1993) Geometric and functional analysis
Riemannsche Flächen mit Eigenwerten in (0, ...). Peter Buser (1977) Commentarii mathematici Helvetici
Rigidité différentiable des groupes fuchsiens Étienne Ghys (1993) Publications Mathématiques de l'IHÉS
Rigidity of circle domains whose boundary has ...-finite linear measure. Zheng-Xu He, Oded Schramm (1994) Inventiones mathematicae
Rigidity of cusps in deformations of hyperbolic 3-orbifolds. Walter D. Neumann, Alan W. Reid (1993) Mathematische Annalen
Rotationally Symmetric Harmonic Maps from a Ball into a Warped Product Manifold. Atsushi Tachikawa (1985) Manuscripta mathematica