| article html file updated | 9 February 2020 13:05 CET | Update | https://www.mdpi.com/2304-6767/6/2/9 |
| article html file updated | 1 May 2019 04:55 CEST | Update | - |
| article html file updated | 17 April 2019 05:10 CEST | Update | - |
| article html file updated | 29 March 2019 14:01 CET | Update | - |
| article html file updated | 9 April 2018 14:00 CEST | Original file | - |
| article xml uploaded. | 9 April 2018 13:59 CEST | Original file | https://www.mdpi.com/2304-6767/6/2/9/xml |
| article pdf uploaded. | 9 April 2018 13:59 CEST | Version of Record | https://www.mdpi.com/2304-6767/6/2/9/pdf |
