| article html file updated | 6 February 2020 04:48 CET | Update | https://www.mdpi.com/1999-4923/5/4/508 |
| article html file updated | 7 May 2019 23:31 CEST | Update | N/A |
| article html file updated | 21 March 2019 05:42 CET | Update | N/A |
| article html file updated | 17 June 2015 13:45 CEST | Update | N/A |
| article html file updated | 7 January 2014 12:39 CET | Original file | N/A |
| article xml file uploaded | 7 January 2014 12:39 CET | Original file | https://www.mdpi.com/1999-4923/5/4/508/xml |
| article supplementary file uploaded. | 11 October 2013 14:25 CEST | - | https://www.mdpi.com/1999-4923/5/4/508#supplementary |
| article pdf uploaded. | 11 October 2013 14:25 CEST | Version of Record | https://www.mdpi.com/1999-4923/5/4/508/pdf |
