http://hdl.handle.net/20.500.14044/35637 Sun, 26 Jul 2026 06:15:37 GMT 2026-07-26T06:15:37Z https://https://oda.uni-obuda.hu:443/bitstream/id/280eb14f-a1c9-4039-9db7-a3d011048023/ http://hdl.handle.net/20.500.14044/35637