| article html file updated | 6 February 2020 07:16 CET | Update | https://www.mdpi.com/2072-6694/6/1/416 |
| article html file updated | 7 May 2019 18:37 CEST | Update | - |
| article html file updated | 21 March 2019 12:22 CET | Update | - |
| article html file updated | 19 August 2015 20:28 CEST | Update | - |
| article html file updated | 28 April 2014 10:42 CEST | Original file | - |
| article xml file uploaded | 28 April 2014 10:42 CEST | Original file | https://www.mdpi.com/2072-6694/6/1/416/xml |
| article pdf uploaded. | 17 February 2014 09:05 CET | Version of Record | https://www.mdpi.com/2072-6694/6/1/416/pdf |
