| article html file updated | 8 February 2020 04:17 CET | Update | https://www.mdpi.com/2071-1050/9/4/672 |
| article html file updated | 24 September 2019 11:44 CEST | Update | N/A |
| article html file updated | 4 May 2019 00:56 CEST | Update | N/A |
| article html file updated | 28 April 2017 11:12 CEST | Update | N/A |
| article html file updated | 24 April 2017 13:53 CEST | Original file | N/A |
| article xml uploaded. | 24 April 2017 13:51 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/672/xml |
| article pdf uploaded. | 24 April 2017 13:51 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/672/pdf |
