| article html file updated | 5 February 2020 09:42 CET | Update | https://www.mdpi.com/1424-8220/6/11/1428 |
| article html file updated | 9 May 2019 16:40 CEST | Update | - |
| article html file updated | 22 March 2019 06:50 CET | Update | - |
| article html file updated | 19 March 2019 13:00 CET | Update | - |
| article html file updated | 3 February 2014 11:17 CET | Original file | - |
| article xml file uploaded | 3 February 2014 11:16 CET | Original file | https://www.mdpi.com/1424-8220/6/11/1428/xml |
