| article html file updated | 7 February 2020 01:54 CET | Update | https://www.mdpi.com/2071-1050/7/12/15816 |
| article html file updated | 6 May 2019 05:39 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:57 CET | Original file | N/A |
| article pdf uploaded. | 8 December 2015 08:38 CET | Version of Record | https://www.mdpi.com/2071-1050/7/12/15816/pdf |
| article xml uploaded. | 8 December 2015 08:38 CET | Original file | https://www.mdpi.com/2071-1050/7/12/15816/xml |
