| article html file updated | 6 February 2020 08:42 CET | Update | https://www.mdpi.com/1999-4915/6/4/1789 |
| article html file updated | 7 May 2019 15:41 CEST | Update | - |
| article html file updated | 21 March 2019 15:46 CET | Update | - |
| article html file updated | 20 August 2015 03:47 CEST | Update | - |
| article html file updated | 12 May 2014 15:35 CEST | Original file | - |
| article xml file uploaded | 12 May 2014 15:35 CEST | Original file | https://www.mdpi.com/1999-4915/6/4/1789/xml |
| article pdf uploaded. | 21 April 2014 07:58 CEST | Version of Record | https://www.mdpi.com/1999-4915/6/4/1789/pdf |
