| article html file updated | 6 February 2020 22:23 CET | Update | https://www.mdpi.com/1424-8220/15/9/21957 |
| article html file updated | 6 May 2019 12:12 CEST | Update | - |
| article html file updated | 26 March 2019 09:56 CET | Update | - |
| article html file updated | 9 October 2015 11:58 CEST | Original file | - |
| article xml file uploaded | 9 October 2015 11:58 CEST | Original file | https://www.mdpi.com/1424-8220/15/9/21957/xml |
| article pdf uploaded. | 2 September 2015 11:14 CEST | Version of Record | https://www.mdpi.com/1424-8220/15/9/21957/pdf |
