| article html file updated | 7 February 2020 02:15 CET | Update | https://www.mdpi.com/2071-1050/7/12/15831 |
| article html file updated | 6 May 2019 04:57 CEST | Update | - |
| article html file updated | 26 March 2019 16:30 CET | Original file | - |
| article pdf uploaded. | 15 December 2015 14:15 CET | Version of Record | https://www.mdpi.com/2071-1050/7/12/15831/pdf |
| article xml uploaded. | 15 December 2015 14:15 CET | Original file | https://www.mdpi.com/2071-1050/7/12/15831/xml |
