| article html file updated | 7 February 2020 06:38 CET | Update | https://www.mdpi.com/2071-1050/8/4/320 |
| article html file updated | 5 May 2019 19:57 CEST | Update | - |
| article html file updated | 27 March 2019 00:43 CET | Update | - |
| article html file updated | 29 April 2016 05:46 CEST | Update | - |
| article html file updated | 30 March 2016 12:18 CEST | Original file | - |
| article xml uploaded. | 30 March 2016 12:07 CEST | Update | https://www.mdpi.com/2071-1050/8/4/320/xml |
| article pdf uploaded. | 30 March 2016 12:07 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/4/320/pdf |
