| article html file updated | 6 February 2020 07:33 CET | Update | https://www.mdpi.com/2072-6694/6/1/459 |
| article html file updated | 7 May 2019 18:04 CEST | Update | - |
| article html file updated | 21 March 2019 13:02 CET | Update | - |
| article html file updated | 19 August 2015 21:52 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/2072-6694/6/1/459/xml |
| article pdf uploaded. | 26 February 2014 14:55 CET | Version of Record | https://www.mdpi.com/2072-6694/6/1/459/pdf |
