| article html file updated | 6 February 2020 06:57 CET | Update | https://www.mdpi.com/2073-4441/6/2/229 |
| article html file updated | 7 May 2019 19:21 CEST | Update | - |
| article html file updated | 21 March 2019 11:34 CET | Update | - |
| article html file updated | 19 August 2015 18:43 CEST | Update | - |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Update | https://www.mdpi.com/2073-4441/6/2/229/xml |
| article html file updated | 24 June 2014 12:28 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:28 CEST | Original file | - |
| article pdf uploaded. | 6 February 2014 11:50 CET | Updated version of record | https://www.mdpi.com/2073-4441/6/2/229/pdf |
| article pdf uploaded. | 27 January 2014 10:54 CET | Version of Record | https://www.mdpi.com/2073-4441/6/2/229/pdf-vor |
