| article html file updated | 6 February 2020 06:59 CET | Update | https://www.mdpi.com/2072-6694/6/1/226 |
| article html file updated | 7 May 2019 19:14 CEST | Update | - |
| article html file updated | 21 March 2019 11:41 CET | Update | - |
| article html file updated | 19 August 2015 19:01 CEST | Update | - |
| article html file updated | 28 April 2014 10:40 CEST | Original file | - |
| article xml file uploaded | 28 April 2014 10:40 CEST | Original file | https://www.mdpi.com/2072-6694/6/1/226/xml |
| article pdf uploaded. | 27 January 2014 16:43 CET | Version of Record | https://www.mdpi.com/2072-6694/6/1/226/pdf |
