| article html file updated | 6 February 2020 08:42 CET | Update | https://www.mdpi.com/2079-6412/4/2/231 |
| article html file updated | 7 May 2019 15:41 CEST | Update | - |
| article html file updated | 21 March 2019 15:45 CET | Update | - |
| article html file updated | 18 May 2016 12:39 CEST | Update | - |
| article html file updated | 20 August 2015 03:45 CEST | Update | - |
| article html file updated | 24 June 2014 12:04 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:04 CEST | Original file | https://www.mdpi.com/2079-6412/4/2/231/xml |
| article pdf uploaded. | 17 April 2014 16:22 CEST | Version of Record | https://www.mdpi.com/2079-6412/4/2/231/pdf |
