| article html file updated | 8 February 2020 22:29 CET | Update | https://www.mdpi.com/2313-4321/2/4/24 |
| article html file updated | 2 May 2019 12:08 CEST | Update | - |
| article html file updated | 18 April 2019 09:45 CEST | Update | - |
| article html file updated | 28 November 2017 12:15 CET | Original file | - |
| article xml uploaded. | 28 November 2017 12:14 CET | Original file | https://www.mdpi.com/2313-4321/2/4/24/xml |
| article pdf uploaded. | 28 November 2017 12:14 CET | Version of Record | https://www.mdpi.com/2313-4321/2/4/24/pdf |
