| article html file updated | 8 February 2020 04:04 CET | Update | https://www.mdpi.com/2414-4088/1/2/8 |
| article html file updated | 24 September 2019 10:34 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:18 CEST | Update | N/A |
| article html file updated | 22 April 2017 03:55 CEST | Original file | N/A |
| article xml uploaded. | 22 April 2017 03:53 CEST | Original file | https://www.mdpi.com/2414-4088/1/2/8/xml |
| article pdf uploaded. | 22 April 2017 03:53 CEST | Version of Record | https://www.mdpi.com/2414-4088/1/2/8/pdf |
