| article html file updated | 6 February 2020 00:30 CET | Update | https://www.mdpi.com/2224-2708/2/1/85 |
| article html file updated | 8 May 2019 08:33 CEST | Update | N/A |
| article html file updated | 20 March 2019 18:31 CET | Update | N/A |
| article html file updated | 17 June 2015 06:26 CEST | Update | N/A |
| article html file updated | 14 November 2014 11:01 CET | Original file | N/A |
| article xml file uploaded | 14 November 2014 11:01 CET | Original file | https://www.mdpi.com/2224-2708/2/1/85/xml |
| article pdf uploaded. | 8 February 2013 09:11 CET | Version of Record | https://www.mdpi.com/2224-2708/2/1/85/pdf |
