| article html file updated | 8 February 2020 03:03 CET | Update | https://www.mdpi.com/2071-1050/9/4/560 |
| article html file updated | 24 September 2019 04:53 CEST | Update | - |
| article html file updated | 4 May 2019 03:14 CEST | Update | - |
| article html file updated | 28 April 2017 10:56 CEST | Update | - |
| article html file updated | 7 April 2017 09:05 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 09:03 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/560/xml |
| article pdf uploaded. | 7 April 2017 09:03 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/560/pdf |
