| article html file updated | 6 February 2020 13:40 CET | Update | https://www.mdpi.com/2072-6694/6/4/2275 |
| article html file updated | 7 May 2019 05:27 CEST | Update | - |
| article html file updated | 25 March 2019 17:46 CET | Update | - |
| article html file updated | 21 August 2015 02:05 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/2072-6694/6/4/2275/xml |
| article pdf uploaded. | 14 November 2014 17:00 CET | Version of Record | https://www.mdpi.com/2072-6694/6/4/2275/pdf |
