| article html file updated | 8 February 2020 18:17 CET | Update | https://www.mdpi.com/2079-8954/5/4/49 |
| article html file updated | 27 September 2019 17:19 CEST | Update | N/A |
| article html file updated | 2 May 2019 21:40 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:12 CET | Update | N/A |
| article html file updated | 12 October 2017 18:07 CEST | Original file | N/A |
| article xml uploaded. | 12 October 2017 18:06 CEST | Original file | https://www.mdpi.com/2079-8954/5/4/49/xml |
| article pdf uploaded. | 12 October 2017 18:06 CEST | Version of Record | https://www.mdpi.com/2079-8954/5/4/49/pdf |
