| article html file updated | 6 February 2020 08:25 CET | Update | https://www.mdpi.com/2073-4409/3/2/247 |
| article html file updated | 7 May 2019 16:16 CEST | Update | - |
| article html file updated | 21 March 2019 15:05 CET | Update | - |
| article html file updated | 20 August 2015 02:21 CEST | Update | - |
| article html file updated | 11 July 2014 10:25 CEST | Original file | - |
| article xml file uploaded | 11 July 2014 10:25 CEST | Original file | https://www.mdpi.com/2073-4409/3/2/247/xml |
| article pdf uploaded. | 4 April 2014 16:01 CEST | Version of Record | https://www.mdpi.com/2073-4409/3/2/247/pdf |
