| article html file updated | 12 February 2020 05:04 CET | Update | https://www.mdpi.com/2411-5142/4/2/21 |
| article html file updated | 18 October 2019 06:39 CEST | Update | - |
| article html file updated | 8 May 2019 04:24 CEST | Original file | - |
| article pdf uploaded. | 8 May 2019 04:23 CEST | Updated version of record | https://www.mdpi.com/2411-5142/4/2/21/pdf |
| article xml uploaded. | 8 May 2019 04:23 CEST | Update | https://www.mdpi.com/2411-5142/4/2/21/xml |
| article xml file uploaded | 8 May 2019 04:23 CEST | Update | - |
| article pdf uploaded. | 12 April 2019 18:06 CEST | Version of Record | https://www.mdpi.com/2411-5142/4/2/21/pdf-vor |
| article xml file uploaded | 12 April 2019 18:06 CEST | Original file | - |
