| article html file updated | 7 February 2020 03:27 CET | Update | https://www.mdpi.com/2072-666X/7/1/9 |
| article html file updated | 21 September 2019 09:41 CEST | Update | - |
| article html file updated | 6 May 2019 02:33 CEST | Update | - |
| article html file updated | 26 March 2019 18:29 CET | Update | - |
| article html file updated | 15 October 2018 04:00 CEST | Original file | - |
| article pdf uploaded. | 15 January 2016 08:52 CET | Version of Record | https://www.mdpi.com/2072-666X/7/1/9/pdf |
| article xml uploaded. | 15 January 2016 08:52 CET | Original file | https://www.mdpi.com/2072-666X/7/1/9/xml |
