| article html file updated | 6 February 2020 14:00 CET | Update | https://www.mdpi.com/2073-4425/5/4/1050 |
| article html file updated | 7 May 2019 04:49 CEST | Update | - |
| article html file updated | 25 March 2019 18:28 CET | Update | - |
| article html file updated | 21 August 2015 02:51 CEST | Update | - |
| article html file updated | 26 December 2014 11:27 CET | Original file | - |
| article xml file uploaded | 26 December 2014 11:27 CET | Original file | https://www.mdpi.com/2073-4425/5/4/1050/xml |
| article pdf uploaded. | 27 November 2014 15:31 CET | Version of Record | https://www.mdpi.com/2073-4425/5/4/1050/pdf |
