| article html file updated | 6 February 2020 22:17 CET | Update | https://www.mdpi.com/1424-8220/15/9/21746 |
| article html file updated | 6 May 2019 12:25 CEST | Update | - |
| article html file updated | 26 March 2019 09:45 CET | Update | - |
| article html file updated | 9 October 2015 11:58 CEST | Update | - |
| article xml file uploaded | 9 October 2015 11:58 CEST | Update | https://www.mdpi.com/1424-8220/15/9/21746/xml |
| article html file updated | 16 September 2015 08:20 CEST | Original file | - |
| article xml file uploaded | 16 September 2015 08:20 CEST | Original file | - |
| article pdf uploaded. | 3 September 2015 09:05 CEST | Version of Record | https://www.mdpi.com/1424-8220/15/9/21746/pdf |
