| article html file updated | 6 February 2020 19:47 CET | Update | https://www.mdpi.com/2072-6651/7/6/2221 |
| article html file updated | 6 May 2019 17:33 CEST | Update | - |
| article html file updated | 26 March 2019 04:56 CET | Update | - |
| article html file updated | 21 August 2015 13:45 CEST | Update | - |
| article html file updated | 2 July 2015 10:15 CEST | Original file | - |
| article xml file uploaded | 2 July 2015 10:15 CEST | Original file | https://www.mdpi.com/2072-6651/7/6/2221/xml |
| article pdf uploaded. | 17 June 2015 15:21 CEST | Version of Record | https://www.mdpi.com/2072-6651/7/6/2221/pdf |
