| article html file updated | 8 February 2020 18:00 CET | Update | https://www.mdpi.com/2412-3811/2/4/13 |
| article html file updated | 27 September 2019 15:01 CEST | Update | N/A |
| article html file updated | 2 May 2019 22:17 CEST | Update | N/A |
| article html file updated | 11 October 2017 12:31 CEST | Original file | N/A |
| article xml uploaded. | 11 October 2017 12:29 CEST | Original file | https://www.mdpi.com/2412-3811/2/4/13/xml |
| article pdf uploaded. | 11 October 2017 12:29 CEST | Updated version of record | https://www.mdpi.com/2412-3811/2/4/13/pdf |
| article pdf uploaded. | 9 October 2017 15:00 CEST | Version of Record | https://www.mdpi.com/2412-3811/2/4/13/pdf-vor |
