| article html file updated | 8 February 2020 03:51 CET | Update | https://www.mdpi.com/2071-1050/9/4/638 |
| article html file updated | 24 September 2019 09:19 CEST | Update | - |
| article html file updated | 4 May 2019 01:43 CEST | Update | - |
| article html file updated | 28 April 2017 11:08 CEST | Update | - |
| article html file updated | 18 April 2017 16:04 CEST | Original file | - |
| article xml uploaded. | 18 April 2017 16:02 CEST | Update | https://www.mdpi.com/2071-1050/9/4/638/xml |
| article pdf uploaded. | 18 April 2017 16:02 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/638/pdf |
