| article html file updated | 12 February 2020 05:02 CET | Update | https://www.mdpi.com/2224-2708/8/2/20 |
| article html file updated | 18 October 2019 06:31 CEST | Update | - |
| article html file updated | 5 July 2019 13:15 CEST | Update | - |
| article html file updated | 5 July 2019 08:27 CEST | Update | - |
| article html file updated | 13 May 2019 12:10 CEST | Original file | - |
| article pdf uploaded. | 13 May 2019 12:09 CEST | Updated version of record | https://www.mdpi.com/2224-2708/8/2/20/pdf |
| article xml uploaded. | 13 May 2019 12:09 CEST | Update | https://www.mdpi.com/2224-2708/8/2/20/xml |
| article xml file uploaded | 13 May 2019 12:09 CEST | Update | - |
| article pdf uploaded. | 12 April 2019 17:20 CEST | Version of Record | https://www.mdpi.com/2224-2708/8/2/20/pdf-vor |
| article xml file uploaded | 12 April 2019 17:20 CEST | Original file | - |
