| article html file updated | 7 February 2020 01:55 CET | Update | https://www.mdpi.com/2071-1050/7/12/15817 |
| article html file updated | 6 May 2019 05:38 CEST | Update | - |
| article html file updated | 26 March 2019 15:58 CET | Original file | - |
| article pdf uploaded. | 8 December 2015 08:45 CET | Version of Record | https://www.mdpi.com/2071-1050/7/12/15817/pdf |
| article xml uploaded. | 8 December 2015 08:45 CET | Original file | https://www.mdpi.com/2071-1050/7/12/15817/xml |
