| article html file updated | 8 February 2020 22:47 CET | Update | https://www.mdpi.com/1999-4923/9/4/54 |
| article html file updated | 28 September 2019 21:38 CEST | Update | N/A |
| article html file updated | 2 May 2019 11:25 CEST | Update | N/A |
| article html file updated | 18 April 2019 09:03 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:39 CET | Update | N/A |
| article html file updated | 5 December 2017 05:55 CET | Update | N/A |
| article xml uploaded. | 5 December 2017 05:54 CET | Update | https://www.mdpi.com/1999-4923/9/4/54/xml |
| article pdf uploaded. | 5 December 2017 05:54 CET | Updated version of record | https://www.mdpi.com/1999-4923/9/4/54/pdf |
| article html file updated | 1 December 2017 12:05 CET | Original file | N/A |
| article xml uploaded. | 1 December 2017 12:03 CET | Original file | N/A |
| article pdf uploaded. | 1 December 2017 12:03 CET | Version of Record | https://www.mdpi.com/1999-4923/9/4/54/pdf-vor |
