| article html file updated | 6 February 2020 09:40 CET | Update | https://www.mdpi.com/1996-1073/7/6/3599 |
| article html file updated | 7 May 2019 13:43 CEST | Update | - |
| article html file updated | 21 March 2019 18:04 CET | Update | - |
| article html file updated | 20 August 2015 08:54 CEST | Update | - |
| article html file updated | 11 July 2014 09:30 CEST | Update | - |
| article xml file uploaded | 11 July 2014 09:30 CEST | Update | https://www.mdpi.com/1996-1073/7/6/3599/xml |
| article html file updated | 26 June 2014 11:24 CEST | Original file | - |
| article xml file uploaded | 26 June 2014 11:24 CEST | Original file | - |
| article pdf uploaded. | 2 June 2014 11:28 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/6/3599/pdf |
