| article html file updated | 8 February 2020 20:45 CET | Update | https://www.mdpi.com/1999-4923/9/4/51 |
| article html file updated | 28 September 2019 08:36 CEST | Update | N/A |
| article html file updated | 2 May 2019 16:00 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:38 CET | Update | N/A |
| article html file updated | 9 November 2017 14:29 CET | Original file | N/A |
| article xml uploaded. | 9 November 2017 14:28 CET | Original file | https://www.mdpi.com/1999-4923/9/4/51/xml |
| article pdf uploaded. | 9 November 2017 14:28 CET | Version of Record | https://www.mdpi.com/1999-4923/9/4/51/pdf |
