| article html file updated | 6 February 2020 07:18 CET | Update | https://www.mdpi.com/2073-4441/6/2/381 |
| article html file updated | 7 May 2019 18:33 CEST | Update | - |
| article html file updated | 21 March 2019 12:26 CET | Update | - |
| article html file updated | 19 August 2015 20:38 CEST | Update | - |
| article html file updated | 21 May 2014 08:10 CEST | Original file | - |
| article xml file uploaded | 21 May 2014 08:10 CEST | Original file | https://www.mdpi.com/2073-4441/6/2/381/xml |
| article pdf uploaded. | 19 February 2014 13:45 CET | Updated version of record | https://www.mdpi.com/2073-4441/6/2/381/pdf |
| article pdf uploaded. | 18 February 2014 11:10 CET | Version of Record | https://www.mdpi.com/2073-4441/6/2/381/pdf-vor |
