| article html file updated | 8 February 2020 04:06 CET | Update | https://www.mdpi.com/2071-1050/9/4/664 |
| article html file updated | 24 September 2019 10:48 CEST | Update | - |
| article html file updated | 4 May 2019 01:14 CEST | Update | - |
| article html file updated | 28 April 2017 11:12 CEST | Update | - |
| article html file updated | 25 April 2017 11:54 CEST | Original file | - |
| article xml uploaded. | 25 April 2017 11:53 CEST | Update | https://www.mdpi.com/2071-1050/9/4/664/xml |
| article pdf uploaded. | 25 April 2017 11:53 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/664/pdf |
| article pdf uploaded. | 21 April 2017 14:51 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/664/pdf-vor |
