| article html file updated | 9 February 2020 08:08 CET | Update | https://www.mdpi.com/2413-8851/2/1/19 |
| article html file updated | 1 May 2019 15:17 CEST | Update | - |
| article html file updated | 17 April 2019 14:50 CEST | Update | - |
| article html file updated | 29 March 2019 02:45 CET | Update | - |
| article html file updated | 28 February 2018 18:11 CET | Original file | - |
| article xml uploaded. | 28 February 2018 18:10 CET | Update | https://www.mdpi.com/2413-8851/2/1/19/xml |
| article xml uploaded. | 28 February 2018 18:10 CET | Original file | - |
| article pdf uploaded. | 28 February 2018 18:10 CET | Version of Record | https://www.mdpi.com/2413-8851/2/1/19/pdf |
