| article html file updated | 6 February 2020 07:03 CET | Update | https://www.mdpi.com/1999-4915/6/2/476 |
| article html file updated | 7 May 2019 19:05 CEST | Update | - |
| article html file updated | 21 March 2019 11:50 CET | Update | - |
| article html file updated | 19 August 2015 19:20 CEST | Update | - |
| article html file updated | 14 August 2014 12:06 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:06 CEST | Update | https://www.mdpi.com/1999-4915/6/2/476/xml |
| article html file updated | 18 March 2014 10:00 CET | Original file | - |
| article xml file uploaded | 18 March 2014 10:00 CET | Original file | - |
| article pdf uploaded. | 6 February 2014 16:06 CET | Updated version of record | https://www.mdpi.com/1999-4915/6/2/476/pdf |
| article pdf uploaded. | 28 January 2014 16:52 CET | Version of Record | https://www.mdpi.com/1999-4915/6/2/476/pdf-vor |
