| article html file updated | 7 February 2020 22:42 CET | Update | https://www.mdpi.com/2071-1050/9/2/212 |
| article html file updated | 23 September 2019 04:09 CEST | Update | - |
| article html file updated | 4 May 2019 12:38 CEST | Update | - |
| article html file updated | 1 March 2017 10:29 CET | Update | - |
| article html file updated | 5 February 2017 09:18 CET | Original file | - |
| article xml uploaded. | 5 February 2017 09:17 CET | Original file | https://www.mdpi.com/2071-1050/9/2/212/xml |
| article pdf uploaded. | 5 February 2017 09:17 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/212/pdf |
