| article html file updated | 7 February 2020 07:34 CET | Update | https://www.mdpi.com/2071-1050/8/4/391 |
| article html file updated | 5 May 2019 18:02 CEST | Update | - |
| article html file updated | 27 March 2019 02:29 CET | Update | - |
| article html file updated | 29 April 2016 06:06 CEST | Update | - |
| article html file updated | 20 April 2016 16:02 CEST | Original file | - |
| article xml uploaded. | 20 April 2016 16:00 CEST | Update | https://www.mdpi.com/2071-1050/8/4/391/xml |
| article pdf uploaded. | 20 April 2016 16:00 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/4/391/pdf |
