| article html file updated | 7 February 2020 19:11 CET | Update | https://www.mdpi.com/1996-1944/9/12/988 |
| article html file updated | 22 September 2019 09:09 CEST | Update | N/A |
| article html file updated | 4 May 2019 20:09 CEST | Update | N/A |
| article html file updated | 28 December 2016 10:39 CET | Update | N/A |
| article html file updated | 6 December 2016 13:09 CET | Original file | N/A |
| article xml uploaded. | 6 December 2016 13:08 CET | Original file | https://www.mdpi.com/1996-1944/9/12/988/xml |
| article pdf uploaded. | 6 December 2016 13:08 CET | Version of Record | https://www.mdpi.com/1996-1944/9/12/988/pdf |
