| article html file updated | 8 February 2020 16:59 CET | Update | https://www.mdpi.com/2079-9292/6/4/71 |
| article html file updated | 27 September 2019 07:59 CEST | Update | - |
| article html file updated | 3 May 2019 00:26 CEST | Update | - |
| article html file updated | 2 January 2018 11:23 CET | Update | - |
| article html file updated | 23 September 2017 09:58 CEST | Original file | - |
| article xml uploaded. | 23 September 2017 09:57 CEST | Update | https://www.mdpi.com/2079-9292/6/4/71/xml |
| article xml uploaded. | 23 September 2017 09:57 CEST | Original file | - |
| article pdf uploaded. | 23 September 2017 09:57 CEST | Version of Record | https://www.mdpi.com/2079-9292/6/4/71/pdf |
