| article html file updated | 9 February 2020 06:10 CET | Update | https://www.mdpi.com/2411-5150/2/1/8 |
| article html file updated | 1 May 2019 19:30 CEST | Update | - |
| article html file updated | 17 April 2019 18:40 CEST | Update | - |
| article html file updated | 28 March 2019 22:20 CET | Update | - |
| article html file updated | 9 February 2018 18:16 CET | Original file | - |
| article xml uploaded. | 9 February 2018 18:15 CET | Update | https://www.mdpi.com/2411-5150/2/1/8/xml |
| article xml uploaded. | 9 February 2018 18:15 CET | Original file | - |
| article pdf uploaded. | 9 February 2018 18:15 CET | Version of Record | https://www.mdpi.com/2411-5150/2/1/8/pdf |
