| article html file updated | 6 February 2020 10:49 CET | Update | https://www.mdpi.com/2072-6643/6/7/2668 |
| article html file updated | 7 May 2019 11:25 CEST | Update | - |
| article html file updated | 21 March 2019 21:11 CET | Update | - |
| article html file updated | 20 August 2015 13:04 CEST | Update | - |
| article html file updated | 29 July 2014 11:36 CEST | Update | - |
| article xml file uploaded | 29 July 2014 11:36 CEST | Update | https://www.mdpi.com/2072-6643/6/7/2668/xml |
| article html file updated | 29 July 2014 06:05 CEST | Original file | - |
| article xml file uploaded | 29 July 2014 06:05 CEST | Original file | - |
| article pdf uploaded. | 18 July 2014 11:46 CEST | Version of Record | https://www.mdpi.com/2072-6643/6/7/2668/pdf |
