| article html file updated | 6 February 2020 18:02 CET | Update | https://www.mdpi.com/2072-6694/7/2/688 |
| article html file updated | 6 May 2019 21:13 CEST | Update | - |
| article html file updated | 26 March 2019 01:23 CET | Update | - |
| article html file updated | 21 August 2015 11:09 CEST | Update | - |
| article html file updated | 7 July 2015 04:43 CEST | Original file | - |
| article xml file uploaded | 7 July 2015 04:43 CEST | Original file | https://www.mdpi.com/2072-6694/7/2/688/xml |
| article pdf uploaded. | 24 April 2015 12:21 CEST | Version of Record | https://www.mdpi.com/2072-6694/7/2/688/pdf |
