Wolpers, M.M.WolpersUllrich, C.C.UllrichRenzel, D.D.RenzelFriedrich, M.M.FriedrichKlamma, R.R.Klamma2022-03-112022-03-112010https://publica.fraunhofer.de/handle/publica/368332en004005006400Early experiences with responsive open learning environmentsconference paper