| article html file updated | 6 February 2020 23:05 CET | Update | https://www.mdpi.com/1999-4907/6/9/3278 |
| article html file updated | 6 May 2019 10:44 CEST | Update | - |
| article html file updated | 26 March 2019 11:18 CET | Update | - |
| article html file updated | 27 February 2017 11:18 CET | Update | - |
| article html file updated | 12 October 2015 11:48 CEST | Original file | - |
| article xml file uploaded | 12 October 2015 11:48 CEST | Original file | https://www.mdpi.com/1999-4907/6/9/3278/xml |
| article pdf uploaded. | 24 September 2015 05:43 CEST | Updated version of record | https://www.mdpi.com/1999-4907/6/9/3278/pdf |
| article pdf uploaded. | 22 September 2015 14:17 CEST | Version of Record | https://www.mdpi.com/1999-4907/6/9/3278/pdf-vor |
