| article html file updated | 5 February 2020 13:51 CET | Update | https://www.mdpi.com/2073-8994/2/1/320 |
| article html file updated | 18 September 2019 21:41 CEST | Update | - |
| article html file updated | 9 May 2019 07:46 CEST | Update | - |
| article html file updated | 19 March 2019 22:52 CET | Update | - |
| article html file updated | 4 January 2019 02:50 CET | Original file | - |
| article xml uploaded. | 3 January 2019 10:54 CET | Original file | https://www.mdpi.com/2073-8994/2/1/320/xml |
