| article html file updated | 6 February 2020 11:04 CET | Update | https://www.mdpi.com/1996-1073/7/8/4895 |
| article html file updated | 7 May 2019 10:52 CEST | Update | - |
| article html file updated | 21 March 2019 21:58 CET | Update | - |
| article html file updated | 20 August 2015 14:00 CEST | Update | - |
| article html file updated | 11 September 2014 12:14 CEST | Original file | - |
| article xml file uploaded | 11 September 2014 12:14 CEST | Original file | https://www.mdpi.com/1996-1073/7/8/4895/xml |
| article pdf uploaded. | 30 July 2014 08:52 CEST | Version of Record | https://www.mdpi.com/1996-1073/7/8/4895/pdf |
