| article html file updated | 8 February 2020 04:10 CET | Update | https://www.mdpi.com/2071-1050/9/4/666 |
| article html file updated | 24 September 2019 11:10 CEST | Update | - |
| article html file updated | 4 May 2019 01:07 CEST | Update | - |
| article html file updated | 28 April 2017 11:12 CEST | Update | - |
| article html file updated | 22 April 2017 11:43 CEST | Original file | - |
| article xml uploaded. | 22 April 2017 11:42 CEST | Update | https://www.mdpi.com/2071-1050/9/4/666/xml |
| article pdf uploaded. | 22 April 2017 11:42 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/666/pdf |
