| article html file updated | 8 February 2020 08:41 CET | Update | https://www.mdpi.com/2073-4433/8/6/109 |
| article html file updated | 25 September 2019 10:34 CEST | Update | - |
| article html file updated | 3 May 2019 16:41 CEST | Update | - |
| article html file updated | 27 June 2017 09:53 CEST | Update | - |
| article html file updated | 19 June 2017 13:26 CEST | Original file | - |
| article xml uploaded. | 19 June 2017 13:24 CEST | Update | https://www.mdpi.com/2073-4433/8/6/109/xml |
| article pdf uploaded. | 19 June 2017 13:24 CEST | Version of Record | https://www.mdpi.com/2073-4433/8/6/109/pdf |
