| article html file updated | 8 February 2020 06:45 CET | Update | https://www.mdpi.com/2504-186X/2/2/8 |
| article html file updated | 25 September 2019 00:39 CEST | Update | N/A |
| article html file updated | 3 May 2019 20:19 CEST | Update | N/A |
| article html file updated | 26 May 2017 08:44 CEST | Original file | N/A |
| article xml uploaded. | 26 May 2017 08:43 CEST | Original file | https://www.mdpi.com/2504-186X/2/2/8/xml |
| article pdf uploaded. | 26 May 2017 08:43 CEST | Version of Record | https://www.mdpi.com/2504-186X/2/2/8/pdf |
