| article html file updated | 8 February 2020 08:49 CET | Update | https://www.mdpi.com/2072-6643/9/6/634 |
| article html file updated | 25 September 2019 11:09 CEST | Update | - |
| article html file updated | 3 May 2019 16:28 CEST | Update | - |
| article html file updated | 29 June 2017 11:48 CEST | Update | - |
| article html file updated | 20 June 2017 16:02 CEST | Original file | - |
| article xml uploaded. | 20 June 2017 16:01 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/634/xml |
| article pdf uploaded. | 20 June 2017 16:01 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/634/pdf |
