| article html file updated | 12 February 2020 05:02 CET | Update | https://www.mdpi.com/2413-8851/3/2/42 |
| article html file updated | 18 October 2019 06:28 CEST | Update | - |
| article html file updated | 10 May 2019 13:57 CEST | Original file | - |
| article pdf uploaded. | 10 May 2019 13:56 CEST | Updated version of record | https://www.mdpi.com/2413-8851/3/2/42/pdf |
| article xml uploaded. | 10 May 2019 13:56 CEST | Update | https://www.mdpi.com/2413-8851/3/2/42/xml |
| article xml file uploaded | 10 May 2019 13:56 CEST | Update | - |
| article pdf uploaded. | 12 April 2019 17:02 CEST | Version of Record | https://www.mdpi.com/2413-8851/3/2/42/pdf-vor |
| article xml file uploaded | 12 April 2019 17:02 CEST | Original file | - |
