| article html file updated | 8 February 2020 07:45 CET | Update | https://www.mdpi.com/2073-4441/9/6/408 |
| article html file updated | 25 September 2019 05:42 CEST | Update | N/A |
| article html file updated | 3 May 2019 18:27 CEST | Update | N/A |
| article html file updated | 29 June 2017 12:13 CEST | Update | N/A |
| article html file updated | 8 June 2017 11:01 CEST | Original file | N/A |
| article xml uploaded. | 8 June 2017 11:00 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/408/xml |
| article pdf uploaded. | 8 June 2017 11:00 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/408/pdf |
