| article html file updated | 6 February 2020 02:31 CET | Update | https://www.mdpi.com/1999-4915/5/6/1414 |
| article html file updated | 8 May 2019 04:18 CEST | Update | - |
| article html file updated | 20 March 2019 23:30 CET | Update | - |
| article html file updated | 17 June 2015 10:02 CEST | Update | - |
| article html file updated | 6 August 2013 16:11 CEST | Original file | - |
| article xml file uploaded | 6 August 2013 16:11 CEST | Original file | https://www.mdpi.com/1999-4915/5/6/1414/xml |
| article pdf uploaded. | 6 June 2013 10:36 CEST | Version of Record | https://www.mdpi.com/1999-4915/5/6/1414/pdf |
