| article html file updated | 8 February 2020 19:16 CET | Update | https://www.mdpi.com/1999-4923/9/4/49 |
| article html file updated | 27 September 2019 23:11 CEST | Update | N/A |
| article html file updated | 2 May 2019 19:25 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:41 CET | Update | N/A |
| article html file updated | 24 October 2017 08:28 CEST | Original file | N/A |
| article xml uploaded. | 24 October 2017 08:26 CEST | Original file | https://www.mdpi.com/1999-4923/9/4/49/xml |
| article pdf uploaded. | 24 October 2017 08:26 CEST | Version of Record | https://www.mdpi.com/1999-4923/9/4/49/pdf |
