| article html file updated | 8 February 2020 15:12 CET | Update | https://www.mdpi.com/2079-6412/7/9/138 |
| article html file updated | 26 September 2019 22:12 CEST | Update | - |
| article html file updated | 3 May 2019 03:48 CEST | Update | - |
| article html file updated | 26 September 2017 06:26 CEST | Update | - |
| article html file updated | 3 September 2017 10:57 CEST | Original file | - |
| article xml uploaded. | 3 September 2017 10:56 CEST | Update | https://www.mdpi.com/2079-6412/7/9/138/xml |
| article xml uploaded. | 3 September 2017 10:56 CEST | Original file | - |
| article pdf uploaded. | 3 September 2017 10:56 CEST | Version of Record | https://www.mdpi.com/2079-6412/7/9/138/pdf |
