| article html file updated | 6 February 2020 22:23 CET | Update | https://www.mdpi.com/1424-8220/15/9/22209 |
| article html file updated | 6 May 2019 12:11 CEST | Update | - |
| article html file updated | 26 March 2019 09:57 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/1424-8220/15/9/22209/xml |
| article html file updated | 16 September 2015 13:38 CEST | Original file | - |
| article xml file uploaded | 16 September 2015 13:38 CEST | Original file | - |
| article pdf uploaded. | 7 September 2015 04:37 CEST | Updated version of record | https://www.mdpi.com/1424-8220/15/9/22209/pdf |
| article pdf uploaded. | 2 September 2015 12:06 CEST | Version of Record | https://www.mdpi.com/1424-8220/15/9/22209/pdf-vor |
