| article html file updated | 7 February 2020 21:01 CET | Update | https://www.mdpi.com/1999-4893/10/1/9 |
| article html file updated | 22 September 2019 19:11 CEST | Update | - |
| article html file updated | 4 May 2019 16:18 CEST | Update | - |
| article html file updated | 28 March 2017 11:51 CEST | Update | - |
| article html file updated | 8 January 2017 06:17 CET | Original file | - |
| article xml uploaded. | 8 January 2017 06:16 CET | Update | https://www.mdpi.com/1999-4893/10/1/9/xml |
| article pdf uploaded. | 8 January 2017 06:16 CET | Version of Record | https://www.mdpi.com/1999-4893/10/1/9/pdf |
