| article html file updated | 6 February 2020 21:30 CET | Update | https://www.mdpi.com/1999-4915/7/8/2826 |
| article html file updated | 6 May 2019 14:06 CEST | Update | - |
| article html file updated | 26 March 2019 08:12 CET | Original file | - |
| article xml file uploaded | 21 September 2015 09:57 CEST | Original file | https://www.mdpi.com/1999-4915/7/8/2826/xml |
| article pdf uploaded. | 12 August 2015 09:07 CEST | Updated version of record | https://www.mdpi.com/1999-4915/7/8/2826/pdf |
| article pdf uploaded. | 6 August 2015 16:20 CEST | Version of Record | https://www.mdpi.com/1999-4915/7/8/2826/pdf-vor |
