A progress report on the (still unresolved) Landsberg-Berwald problem of Finsler geometry: whether there can be non-Berwaldian regular Landsberg spaces
Referencias bibliográficas
T. Aikou, Some remarks on Berwald manifolds and Landsberg manifolds, Acta Math. Acad. Paedagog. Nyházi. (N.S.) 26 (2010), 139 – 148.