| article html file updated | 8 February 2020 03:21 CET | Update | https://www.mdpi.com/2071-1050/9/4/580 |
| article html file updated | 24 September 2019 06:30 CEST | Update | - |
| article html file updated | 4 May 2019 02:39 CEST | Update | - |
| article html file updated | 28 April 2017 11:00 CEST | Update | - |
| article html file updated | 11 April 2017 15:37 CEST | Original file | - |
| article xml uploaded. | 11 April 2017 15:35 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/580/xml |
| article pdf uploaded. | 11 April 2017 15:35 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/580/pdf |
