| article html file updated | 7 February 2020 16:19 CET | Update | https://www.mdpi.com/1996-1073/9/10/821 |
| article html file updated | 5 May 2019 01:43 CEST | Update | - |
| article html file updated | 28 October 2016 09:58 CEST | Update | - |
| article html file updated | 14 October 2016 05:30 CEST | Original file | - |
| article xml uploaded. | 14 October 2016 05:29 CEST | Update | https://www.mdpi.com/1996-1073/9/10/821/xml |
| article xml uploaded. | 14 October 2016 05:29 CEST | Original file | - |
| article pdf uploaded. | 14 October 2016 05:29 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/10/821/pdf |
