| article html file updated | 7 February 2020 07:37 CET | Update | https://www.mdpi.com/2079-4991/6/4/80 |
| article html file updated | 5 May 2019 17:55 CEST | Update | - |
| article html file updated | 27 March 2019 02:37 CET | Update | - |
| article html file updated | 24 February 2017 10:31 CET | Update | - |
| article html file updated | 29 April 2016 06:18 CEST | Update | - |
| article html file updated | 22 April 2016 08:58 CEST | Original file | - |
| article xml uploaded. | 22 April 2016 08:57 CEST | Original file | https://www.mdpi.com/2079-4991/6/4/80/xml |
| article pdf uploaded. | 22 April 2016 08:57 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/4/80/pdf |
