| article html file updated | 8 February 2020 03:21 CET | Update | https://www.mdpi.com/2414-4088/1/2/7 |
| article html file updated | 24 September 2019 06:28 CEST | Update | - |
| article html file updated | 4 May 2019 02:39 CEST | Update | - |
| article html file updated | 11 April 2017 12:36 CEST | Original file | - |
| article xml uploaded. | 11 April 2017 12:34 CEST | Update | https://www.mdpi.com/2414-4088/1/2/7/xml |
| article pdf uploaded. | 11 April 2017 12:34 CEST | Version of Record | https://www.mdpi.com/2414-4088/1/2/7/pdf |
