| article html file updated | 6 February 2020 08:25 CET | Update | https://www.mdpi.com/1999-4907/5/4/643 |
| article html file updated | 7 May 2019 16:17 CEST | Update | - |
| article html file updated | 21 March 2019 15:05 CET | Update | - |
| article html file updated | 20 August 2015 02:20 CEST | Update | - |
| article html file updated | 14 August 2014 11:41 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:41 CEST | Update | https://www.mdpi.com/1999-4907/5/4/643/xml |
| article html file updated | 14 August 2014 11:21 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:21 CEST | Update | - |
| article html file updated | 24 June 2014 12:08 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:08 CEST | Original file | - |
| article pdf uploaded. | 8 April 2014 16:21 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/4/643/pdf |
| article pdf uploaded. | 4 April 2014 15:25 CEST | Version of Record | https://www.mdpi.com/1999-4907/5/4/643/pdf-vor |
