| article html file updated | 7 February 2020 19:48 CET | Update | https://www.mdpi.com/1996-1073/9/12/1073 |
| article html file updated | 22 September 2019 12:30 CEST | Update | N/A |
| article html file updated | 4 May 2019 18:49 CEST | Update | N/A |
| article html file updated | 28 December 2016 09:07 CET | Update | N/A |
| article html file updated | 16 December 2016 11:32 CET | Original file | N/A |
| article xml uploaded. | 16 December 2016 11:31 CET | Original file | https://www.mdpi.com/1996-1073/9/12/1073/xml |
| article pdf uploaded. | 16 December 2016 11:31 CET | Version of Record | https://www.mdpi.com/1996-1073/9/12/1073/pdf |
