| article html file updated | 7 February 2020 21:26 CET | Update | https://www.mdpi.com/2073-4441/9/1/49 |
| article html file updated | 22 September 2019 21:10 CEST | Update | - |
| article html file updated | 4 May 2019 15:23 CEST | Update | - |
| article html file updated | 7 February 2017 04:32 CET | Update | - |
| article html file updated | 13 January 2017 11:30 CET | Original file | - |
| article xml uploaded. | 13 January 2017 11:29 CET | Update | https://www.mdpi.com/2073-4441/9/1/49/xml |
| article xml uploaded. | 13 January 2017 11:29 CET | Original file | - |
| article pdf uploaded. | 13 January 2017 11:29 CET | Version of Record | https://www.mdpi.com/2073-4441/9/1/49/pdf |
