| article html file updated | 6 February 2020 16:10 CET | Update | https://www.mdpi.com/2073-4433/6/3/209 |
| article html file updated | 7 May 2019 00:36 CEST | Update | - |
| article html file updated | 25 March 2019 22:08 CET | Update | - |
| article html file updated | 21 August 2015 08:00 CEST | Update | - |
| article html file updated | 31 March 2015 05:38 CEST | Original file | - |
| article xml file uploaded | 31 March 2015 05:38 CEST | Original file | https://www.mdpi.com/2073-4433/6/3/209/xml |
| article pdf uploaded. | 26 February 2015 13:49 CET | Version of Record | https://www.mdpi.com/2073-4433/6/3/209/pdf |
