| article html file updated | 6 February 2020 06:32 CET | Update | https://www.mdpi.com/2072-6643/6/1/231 |
| article html file updated | 7 May 2019 20:11 CEST | Update | - |
| article html file updated | 21 March 2019 10:28 CET | Update | - |
| article html file updated | 19 August 2015 16:26 CEST | Update | - |
| article html file updated | 17 February 2014 12:31 CET | Original file | - |
| article xml file uploaded | 17 February 2014 12:30 CET | Original file | https://www.mdpi.com/2072-6643/6/1/231/xml |
| article pdf uploaded. | 3 January 2014 08:50 CET | Version of Record | https://www.mdpi.com/2072-6643/6/1/231/pdf |
