| article html file updated | 9 February 2020 10:54 CET | Update | https://www.mdpi.com/1996-1073/11/4/721 |
| article html file updated | 1 October 2019 21:19 CEST | Update | N/A |
| article html file updated | 1 May 2019 09:29 CEST | Update | N/A |
| article html file updated | 17 April 2019 09:23 CEST | Update | N/A |
| article html file updated | 29 March 2019 08:57 CET | Update | N/A |
| article html file updated | 1 May 2018 08:30 CEST | Update | N/A |
| article html file updated | 22 March 2018 18:13 CET | Original file | N/A |
| article xml uploaded. | 22 March 2018 18:12 CET | Update | https://www.mdpi.com/1996-1073/11/4/721/xml |
| article pdf uploaded. | 22 March 2018 18:12 CET | Version of Record | https://www.mdpi.com/1996-1073/11/4/721/pdf |
