| article html file updated | 9 February 2020 07:21 CET | Update | https://www.mdpi.com/2414-4088/2/1/7 |
| article html file updated | 1 May 2019 16:54 CEST | Update | N/A |
| article html file updated | 17 April 2019 16:18 CEST | Update | N/A |
| article html file updated | 29 March 2019 00:51 CET | Update | N/A |
| article html file updated | 23 February 2018 10:48 CET | Original file | N/A |
| article xml uploaded. | 23 February 2018 10:47 CET | Original file | https://www.mdpi.com/2414-4088/2/1/7/xml |
| article pdf uploaded. | 23 February 2018 10:47 CET | Version of Record | https://www.mdpi.com/2414-4088/2/1/7/pdf |
