Manifolds of nonpositive curvature and their buildings Keith Burns; Ralf Spatzier — 1987 Publications Mathématiques de l'IHÉS
On topological Tits buildings and their classification Keith Burns; Ralf Spatzier — 1987 Publications Mathématiques de l'IHÉS
Ergodic geodesic flows on product manifolds with low dimensional factors. Keith Burns; Marlies Gerber — 1994 Journal für die reine und angewandte Mathematik
Stable ergodicity of skew products Keith Burns; Amie Wilkinson — 1999 Annales scientifiques de l'École Normale Supérieure