| article html file updated | 8 February 2020 00:09 CET | Update | https://www.mdpi.com/2414-4088/1/1/4 |
| article html file updated | 23 September 2019 12:16 CEST | Update | N/A |
| article html file updated | 4 May 2019 09:40 CEST | Update | N/A |
| article html file updated | 24 February 2017 09:36 CET | Original file | N/A |
| article xml uploaded. | 24 February 2017 09:34 CET | Original file | https://www.mdpi.com/2414-4088/1/1/4/xml |
| article pdf uploaded. | 24 February 2017 09:34 CET | Version of Record | https://www.mdpi.com/2414-4088/1/1/4/pdf |
