| article html file updated | 6 February 2020 05:30 CET | Update | https://www.mdpi.com/2073-431X/2/4/152 |
| article html file updated | 7 May 2019 22:13 CEST | Update | - |
| article html file updated | 21 March 2019 07:31 CET | Update | - |
| article html file updated | 19 August 2015 09:27 CEST | Update | - |
| article html file updated | 14 August 2014 11:41 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:41 CEST | Update | https://www.mdpi.com/2073-431X/2/4/152/xml |
| article html file updated | 14 August 2014 11:21 CEST | Original file | - |
| article xml file uploaded | 14 August 2014 11:21 CEST | Original file | - |
| article pdf uploaded. | 18 November 2013 16:01 CET | Updated version of record | https://www.mdpi.com/2073-431X/2/4/152/pdf |
| article pdf uploaded. | 12 November 2013 16:25 CET | Updated version of record | https://www.mdpi.com/2073-431X/2/4/152/pdf-vor |
| article pdf uploaded. | 12 November 2013 16:23 CET | Updated version of record | https://www.mdpi.com/2073-431X/2/4/152/pdf-vor |
| article pdf uploaded. | 12 November 2013 15:25 CET | Version of Record | https://www.mdpi.com/2073-431X/2/4/152/pdf-vor |
