| article html file updated | 7 February 2020 07:31 CET | Update | https://www.mdpi.com/2079-4991/6/4/77 |
| article html file updated | 5 May 2019 18:08 CEST | Update | - |
| article html file updated | 27 March 2019 02:22 CET | Update | - |
| article html file updated | 24 February 2017 10:30 CET | Update | - |
| article html file updated | 29 April 2016 06:17 CEST | Update | - |
| article html file updated | 20 April 2016 09:01 CEST | Original file | - |
| article xml uploaded. | 20 April 2016 09:00 CEST | Original file | https://www.mdpi.com/2079-4991/6/4/77/xml |
| article pdf uploaded. | 20 April 2016 09:00 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/4/77/pdf |
