| article html file updated | 5 February 2020 16:57 CET | Update | https://www.mdpi.com/2073-8994/3/2/134 |
| article html file updated | 19 September 2019 03:45 CEST | Update | - |
| article html file updated | 9 May 2019 01:27 CEST | Update | - |
| article html file updated | 20 March 2019 06:38 CET | Update | - |
| article html file updated | 4 January 2019 02:50 CET | Original file | - |
| article xml uploaded. | 3 January 2019 09:10 CET | Original file | https://www.mdpi.com/2073-8994/3/2/134/xml |
