| article html file updated | 6 February 2020 10:06 CET | Update | https://www.mdpi.com/1999-4907/5/6/1409 |
| article html file updated | 7 May 2019 12:50 CEST | Update | - |
| article html file updated | 21 March 2019 19:15 CET | Update | - |
| article html file updated | 20 August 2015 10:27 CEST | Update | - |
| article html file updated | 27 June 2014 12:33 CEST | Original file | - |
| article xml file uploaded | 27 June 2014 12:33 CEST | Original file | https://www.mdpi.com/1999-4907/5/6/1409/xml |
| article pdf uploaded. | 23 June 2014 10:06 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/6/1409/pdf |
| article pdf uploaded. | 20 June 2014 09:15 CEST | Version of Record | https://www.mdpi.com/1999-4907/5/6/1409/pdf-vor |
