| article html file updated | 7 February 2020 23:46 CET | Update | https://www.mdpi.com/2071-1050/9/2/293 |
| article html file updated | 23 September 2019 10:01 CEST | Update | - |
| article html file updated | 4 May 2019 10:31 CEST | Update | - |
| article html file updated | 1 March 2017 10:42 CET | Update | - |
| article html file updated | 20 February 2017 02:19 CET | Original file | - |
| article xml uploaded. | 20 February 2017 02:18 CET | Original file | https://www.mdpi.com/2071-1050/9/2/293/xml |
| article pdf uploaded. | 20 February 2017 02:18 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/293/pdf |
