| article html file updated | 6 February 2020 08:34 CET | Update | https://www.mdpi.com/1999-4923/6/2/195 |
| article html file updated | 7 May 2019 15:58 CEST | Update | - |
| article html file updated | 21 March 2019 15:25 CET | Update | - |
| article html file updated | 20 August 2015 03:06 CEST | Update | - |
| article html file updated | 8 July 2014 10:36 CEST | Update | - |
| article xml file uploaded | 8 July 2014 10:36 CEST | Update | https://www.mdpi.com/1999-4923/6/2/195/xml |
| article html file updated | 8 July 2014 03:50 CEST | Original file | - |
| article xml file uploaded | 8 July 2014 03:50 CEST | Original file | - |
| article pdf uploaded. | 11 April 2014 14:54 CEST | Version of Record | https://www.mdpi.com/1999-4923/6/2/195/pdf |
