| article html file updated | 9 February 2020 05:08 CET | Update | https://www.mdpi.com/1999-4907/9/2/73 |
| article html file updated | 30 September 2019 10:14 CEST | Update | - |
| article html file updated | 1 May 2019 21:50 CEST | Update | - |
| article html file updated | 17 April 2019 20:39 CEST | Update | - |
| article html file updated | 28 March 2019 20:05 CET | Update | - |
| article html file updated | 14 March 2018 09:27 CET | Update | - |
| article html file updated | 1 February 2018 09:08 CET | Original file | - |
| article xml uploaded. | 1 February 2018 09:07 CET | Original file | https://www.mdpi.com/1999-4907/9/2/73/xml |
| article pdf uploaded. | 1 February 2018 09:07 CET | Version of Record | https://www.mdpi.com/1999-4907/9/2/73/pdf |
