Schmalstieg, D.D.SchmalstiegBimber, O.O.BimberEncarnacao, L.M.L.M.Encarnacao2022-03-082022-03-082000https://publica.fraunhofer.de/handle/publica/304816en608006Tools for interacting with virtual environmentspatent1999-1305901999-1370071999-153567