On a geometric property of the normal bundle of surfaces in IP4. R. Braun — 1991 Mathematische Zeitschrift
On the automorphisms of circular and Reinhardt domains in complex Banach spaces. Harald Upmeier; R. Braun; W. Kaup — 1978 Manuscripta mathematica
Whitney's extension theorem for nonquasianalytic classes of ultradifferentiable functions J. Bonet; R. Braun; R. Meise; B. Taylor — 1991 Studia Mathematica
Classification of conic bundles in ℙ 5 R. Braun; G. Ottaviani; M. Schneider; F.-O. Schreyer — 1996 Annali della Scuola Normale Superiore di Pisa - Classe di Scienze