| article html file updated | 6 February 2020 01:41 CET | Update | https://www.mdpi.com/2073-4344/3/2/444 |
| article html file updated | 8 May 2019 05:56 CEST | Update | - |
| article html file updated | 20 March 2019 21:27 CET | Update | - |
| article html file updated | 17 June 2015 08:41 CEST | Update | - |
| article html file updated | 14 August 2014 11:41 CEST | Update | - |
| article xml file uploaded | 14 August 2014 11:41 CEST | Update | https://www.mdpi.com/2073-4344/3/2/444/xml |
| article html file updated | 14 August 2014 11:21 CEST | Original file | - |
| article xml file uploaded | 14 August 2014 11:21 CEST | Original file | - |
| article pdf uploaded. | 23 April 2013 13:38 CEST | Version of Record | https://www.mdpi.com/2073-4344/3/2/444/pdf |
