| article html file updated | 7 February 2020 21:29 CET | Update | https://www.mdpi.com/1996-1944/10/1/68 |
| article html file updated | 22 September 2019 21:29 CEST | Update | - |
| article html file updated | 4 May 2019 15:16 CEST | Update | - |
| article html file updated | 23 February 2017 02:43 CET | Update | - |
| article html file updated | 8 February 2017 09:23 CET | Update | - |
| article html file updated | 14 January 2017 07:18 CET | Original file | - |
| article xml uploaded. | 14 January 2017 07:16 CET | Original file | https://www.mdpi.com/1996-1944/10/1/68/xml |
| article pdf uploaded. | 14 January 2017 07:16 CET | Version of Record | https://www.mdpi.com/1996-1944/10/1/68/pdf |
