| article html file updated | 6 February 2020 21:58 CET | Update | https://www.mdpi.com/1999-4915/7/8/2844 |
| article html file updated | 6 May 2019 13:05 CEST | Update | - |
| article html file updated | 26 March 2019 09:08 CET | Original file | - |
| article xml file uploaded | 21 September 2015 09:57 CEST | Original file | https://www.mdpi.com/1999-4915/7/8/2844/xml |
| article pdf uploaded. | 25 August 2015 11:48 CEST | Updated version of record | https://www.mdpi.com/1999-4915/7/8/2844/pdf |
| article pdf uploaded. | 21 August 2015 08:37 CEST | Version of Record | https://www.mdpi.com/1999-4915/7/8/2844/pdf-vor |
