| article html file updated | 7 February 2020 22:48 CET | Update | https://www.mdpi.com/2071-1050/9/2/223 |
| article html file updated | 23 September 2019 04:40 CEST | Update | - |
| article html file updated | 4 May 2019 12:26 CEST | Update | - |
| article html file updated | 1 March 2017 10:31 CET | Update | - |
| article html file updated | 7 February 2017 11:42 CET | Original file | - |
| article xml uploaded. | 7 February 2017 11:41 CET | Original file | https://www.mdpi.com/2071-1050/9/2/223/xml |
| article pdf uploaded. | 7 February 2017 11:41 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/223/pdf |
