| article html file updated | 6 February 2020 11:22 CET | Update | https://www.mdpi.com/1999-4923/6/3/447 |
| article html file updated | 7 May 2019 09:57 CEST | Update | N/A |
| article html file updated | 21 March 2019 22:50 CET | Update | N/A |
| article html file updated | 20 August 2015 15:00 CEST | Update | N/A |
| article html file updated | 9 October 2014 11:24 CEST | Update | N/A |
| article xml file uploaded | 9 October 2014 11:24 CEST | Update | https://www.mdpi.com/1999-4923/6/3/447/xml |
| article html file updated | 29 September 2014 08:55 CEST | Original file | N/A |
| article xml file uploaded | 29 September 2014 08:55 CEST | Original file | N/A |
| article pdf uploaded. | 12 August 2014 13:54 CEST | Updated version of record | https://www.mdpi.com/1999-4923/6/3/447/pdf |
| article pdf uploaded. | 11 August 2014 14:45 CEST | Version of Record | https://www.mdpi.com/1999-4923/6/3/447/pdf-vor |
