| article html file updated | 7 February 2020 07:24 CET | Update | https://www.mdpi.com/2079-4991/6/4/73 |
| article html file updated | 5 May 2019 18:21 CEST | Update | - |
| article html file updated | 27 March 2019 02:09 CET | Update | - |
| article html file updated | 24 February 2017 10:29 CET | Update | - |
| article html file updated | 29 April 2016 06:15 CEST | Update | - |
| article html file updated | 18 April 2016 08:56 CEST | Original file | - |
| article xml uploaded. | 18 April 2016 08:55 CEST | Original file | https://www.mdpi.com/2079-4991/6/4/73/xml |
| article pdf uploaded. | 18 April 2016 08:55 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/4/73/pdf |
