| article html file updated | 11 February 2020 01:02 CET | Update | https://www.mdpi.com/2410-390X/2/4/28 |
| article html file updated | 11 October 2019 10:01 CEST | Update | - |
| article html file updated | 28 April 2019 00:07 CEST | Update | - |
| article html file updated | 13 April 2019 20:01 CEST | Update | - |
| article html file updated | 2 April 2019 07:11 CEST | Update | - |
| article html file updated | 4 December 2018 10:19 CET | Original file | - |
| article pdf uploaded. | 4 December 2018 10:16 CET | Version of Record | https://www.mdpi.com/2410-390X/2/4/28/pdf |
| article xml uploaded. | 4 December 2018 10:16 CET | Update | https://www.mdpi.com/2410-390X/2/4/28/xml |
| article xml file uploaded | 4 December 2018 10:16 CET | Original file | - |
