| article html file updated | 9 February 2020 06:09 CET | Update | https://www.mdpi.com/1996-1073/11/2/409 |
| article html file updated | 1 May 2019 19:31 CEST | Update | N/A |
| article html file updated | 17 April 2019 18:41 CEST | Update | N/A |
| article html file updated | 28 March 2019 22:19 CET | Update | N/A |
| article html file updated | 14 March 2018 16:17 CET | Update | N/A |
| article html file updated | 9 February 2018 17:41 CET | Original file | N/A |
| article xml uploaded. | 9 February 2018 17:39 CET | Original file | https://www.mdpi.com/1996-1073/11/2/409/xml |
| article pdf uploaded. | 9 February 2018 17:39 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/409/pdf |
