| article html file updated | 6 February 2020 08:12 CET | Update | https://www.mdpi.com/2072-4292/6/4/2809 |
| article html file updated | 7 May 2019 16:43 CEST | Update | - |
| article html file updated | 21 March 2019 14:36 CET | Update | - |
| article html file updated | 20 August 2015 01:17 CEST | Update | - |
| article html file updated | 14 August 2014 12:04 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:04 CEST | Update | https://www.mdpi.com/2072-4292/6/4/2809/xml |
| article html file updated | 20 May 2014 13:25 CEST | Original file | - |
| article xml file uploaded | 20 May 2014 13:25 CEST | Original file | - |
| article pdf uploaded. | 27 March 2014 09:39 CET | Version of Record | https://www.mdpi.com/2072-4292/6/4/2809/pdf |
