| article html file updated | 9 February 2020 07:52 CET | Update | https://www.mdpi.com/2412-382X/2/1/6 |
| article html file updated | 1 October 2019 02:28 CEST | Update | - |
| article html file updated | 1 May 2019 15:50 CEST | Update | - |
| article html file updated | 17 April 2019 15:19 CEST | Update | - |
| article html file updated | 29 March 2019 02:06 CET | Update | - |
| article html file updated | 27 February 2018 19:24 CET | Original file | - |
| article xml uploaded. | 27 February 2018 19:23 CET | Original file | https://www.mdpi.com/2412-382X/2/1/6/xml |
| article pdf uploaded. | 27 February 2018 19:23 CET | Version of Record | https://www.mdpi.com/2412-382X/2/1/6/pdf |
