| article html file updated | 6 February 2020 08:51 CET | Update | https://www.mdpi.com/2073-4441/6/4/1069 |
| article html file updated | 7 May 2019 15:23 CEST | Update | - |
| article html file updated | 21 March 2019 16:07 CET | Update | - |
| article html file updated | 20 August 2015 04:29 CEST | Update | - |
| article html file updated | 24 June 2014 12:29 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:29 CEST | Original file | https://www.mdpi.com/2073-4441/6/4/1069/xml |
| article pdf uploaded. | 25 April 2014 08:30 CEST | Updated version of record | https://www.mdpi.com/2073-4441/6/4/1069/pdf |
| article pdf uploaded. | 24 April 2014 10:51 CEST | Version of Record | https://www.mdpi.com/2073-4441/6/4/1069/pdf-vor |
