| article html file updated | 6 February 2020 13:55 CET | Update | https://www.mdpi.com/1999-4907/5/12/2947 |
| article html file updated | 7 May 2019 04:58 CEST | Update | - |
| article html file updated | 25 March 2019 18:17 CET | Update | - |
| article html file updated | 21 August 2015 02:42 CEST | Update | - |
| article html file updated | 18 December 2014 11:38 CET | Original file | - |
| article xml file uploaded | 18 December 2014 11:38 CET | Original file | https://www.mdpi.com/1999-4907/5/12/2947/xml |
| article pdf uploaded. | 28 November 2014 08:20 CET | Updated version of record | https://www.mdpi.com/1999-4907/5/12/2947/pdf |
| article pdf uploaded. | 25 November 2014 16:31 CET | Version of Record | https://www.mdpi.com/1999-4907/5/12/2947/pdf-vor |
