| article html file updated | 8 February 2020 21:06 CET | Update | https://www.mdpi.com/2313-4321/2/4/22 |
| article html file updated | 28 September 2019 10:57 CEST | Update | - |
| article html file updated | 2 May 2019 15:11 CEST | Update | - |
| article html file updated | 14 November 2017 09:05 CET | Original file | - |
| article xml uploaded. | 14 November 2017 09:04 CET | Update | https://www.mdpi.com/2313-4321/2/4/22/xml |
| article xml uploaded. | 14 November 2017 09:04 CET | Original file | - |
| article pdf uploaded. | 14 November 2017 09:04 CET | Version of Record | https://www.mdpi.com/2313-4321/2/4/22/pdf |
