| article html file updated | 9 February 2020 05:51 CET | Update | https://www.mdpi.com/2075-1680/7/1/9 |
| article html file updated | 1 May 2019 20:13 CEST | Update | - |
| article html file updated | 17 April 2019 19:18 CEST | Update | - |
| article html file updated | 28 March 2019 21:39 CET | Update | - |
| article html file updated | 26 March 2018 15:31 CEST | Update | - |
| article html file updated | 7 February 2018 12:49 CET | Original file | - |
| article xml uploaded. | 7 February 2018 12:48 CET | Original file | https://www.mdpi.com/2075-1680/7/1/9/xml |
| article pdf uploaded. | 7 February 2018 12:48 CET | Version of Record | https://www.mdpi.com/2075-1680/7/1/9/pdf |
