| article html file updated | 8 February 2020 04:07 CET | Update | https://www.mdpi.com/2071-1050/9/4/660 |
| article html file updated | 24 September 2019 10:49 CEST | Update | - |
| article html file updated | 4 May 2019 01:13 CEST | Update | - |
| article html file updated | 28 April 2017 11:11 CEST | Update | - |
| article html file updated | 21 April 2017 14:39 CEST | Original file | - |
| article xml uploaded. | 21 April 2017 14:38 CEST | Update | https://www.mdpi.com/2071-1050/9/4/660/xml |
| article pdf uploaded. | 21 April 2017 14:38 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/660/pdf |
