| article html file updated | 8 February 2020 03:35 CET | Update | https://www.mdpi.com/2071-1050/9/4/608 |
| article html file updated | 24 September 2019 07:41 CEST | Update | - |
| article html file updated | 4 May 2019 02:14 CEST | Update | - |
| article html file updated | 28 April 2017 11:04 CEST | Update | - |
| article html file updated | 14 April 2017 12:34 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 12:33 CEST | Update | https://www.mdpi.com/2071-1050/9/4/608/xml |
| article pdf uploaded. | 14 April 2017 12:33 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/608/pdf |
