| article html file updated | 7 February 2020 19:22 CET | Update | https://www.mdpi.com/1996-1944/9/12/997 |
| article html file updated | 22 September 2019 10:07 CEST | Update | N/A |
| article html file updated | 4 May 2019 19:45 CEST | Update | N/A |
| article html file updated | 28 December 2016 10:43 CET | Update | N/A |
| article html file updated | 9 December 2016 14:51 CET | Original file | N/A |
| article xml uploaded. | 9 December 2016 14:50 CET | Original file | https://www.mdpi.com/1996-1944/9/12/997/xml |
| article pdf uploaded. | 9 December 2016 14:50 CET | Version of Record | https://www.mdpi.com/1996-1944/9/12/997/pdf |
