| article html file updated | 6 February 2020 08:26 CET | Update | https://www.mdpi.com/1999-4907/5/4/666 |
| article html file updated | 7 May 2019 16:14 CEST | Update | - |
| article html file updated | 21 March 2019 15:08 CET | Update | - |
| article html file updated | 20 August 2015 02:26 CEST | Update | - |
| article html file updated | 23 May 2014 14:09 CEST | Original file | - |
| article xml file uploaded | 23 May 2014 14:09 CEST | Original file | https://www.mdpi.com/1999-4907/5/4/666/xml |
| article pdf uploaded. | 16 April 2014 15:13 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/4/666/pdf |
| article pdf uploaded. | 8 April 2014 12:09 CEST | Version of Record | https://www.mdpi.com/1999-4907/5/4/666/pdf-vor |
