| article html file updated | 7 February 2020 01:58 CET | Update | https://www.mdpi.com/1996-1944/8/12/5474 |
| article html file updated | 6 May 2019 05:31 CEST | Update | - |
| article html file updated | 26 March 2019 16:03 CET | Original file | - |
| article pdf uploaded. | 9 December 2015 11:02 CET | Version of Record | https://www.mdpi.com/1996-1944/8/12/5474/pdf |
| article xml uploaded. | 9 December 2015 11:02 CET | Original file | https://www.mdpi.com/1996-1944/8/12/5474/xml |
