| article html file updated | 6 February 2020 12:25 CET | Update | https://www.mdpi.com/1999-4915/6/9/3500 |
| article html file updated | 7 May 2019 07:57 CEST | Update | - |
| article html file updated | 22 March 2019 01:22 CET | Update | - |
| article html file updated | 20 August 2015 20:29 CEST | Update | - |
| article html file updated | 8 October 2014 08:16 CEST | Original file | - |
| article xml file uploaded | 8 October 2014 08:16 CEST | Original file | https://www.mdpi.com/1999-4915/6/9/3500/xml |
| article pdf uploaded. | 26 September 2014 10:44 CEST | Updated version of record | https://www.mdpi.com/1999-4915/6/9/3500/pdf |
| article pdf uploaded. | 26 September 2014 10:11 CEST | Updated version of record | https://www.mdpi.com/1999-4915/6/9/3500/pdf-vor |
| article pdf uploaded. | 23 September 2014 10:18 CEST | Version of Record | https://www.mdpi.com/1999-4915/6/9/3500/pdf-vor |
