| article html file updated | 8 February 2020 21:31 CET | Update | https://www.mdpi.com/2410-387X/1/3/20 |
| article html file updated | 2 May 2019 14:15 CEST | Update | - |
| article html file updated | 18 April 2019 11:55 CEST | Update | - |
| article html file updated | 21 November 2017 07:34 CET | Original file | - |
| article xml uploaded. | 21 November 2017 07:33 CET | Original file | https://www.mdpi.com/2410-387X/1/3/20/xml |
| article pdf uploaded. | 21 November 2017 07:33 CET | Updated version of record | https://www.mdpi.com/2410-387X/1/3/20/pdf |
| article pdf uploaded. | 17 November 2017 13:22 CET | Version of Record | https://www.mdpi.com/2410-387X/1/3/20/pdf-vor |
