| article html file updated | 6 February 2020 08:38 CET | Update | https://www.mdpi.com/2076-3425/4/2/273 |
| article html file updated | 7 May 2019 15:48 CEST | Update | - |
| article html file updated | 21 March 2019 15:37 CET | Update | - |
| article html file updated | 20 August 2015 03:27 CEST | Update | - |
| article html file updated | 18 July 2014 03:56 CEST | Update | - |
| article xml file uploaded | 18 July 2014 03:56 CEST | Update | https://www.mdpi.com/2076-3425/4/2/273/xml |
| article html file updated | 24 June 2014 12:03 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:03 CEST | Original file | - |
| article pdf uploaded. | 16 April 2014 11:15 CEST | Version of Record | https://www.mdpi.com/2076-3425/4/2/273/pdf |
