| article html file updated | 7 February 2020 23:15 CET | Update | https://www.mdpi.com/2071-1050/9/2/261 |
| article html file updated | 23 September 2019 07:08 CEST | Update | - |
| article html file updated | 4 May 2019 11:32 CEST | Update | - |
| article html file updated | 1 March 2017 10:37 CET | Update | - |
| article html file updated | 13 February 2017 11:14 CET | Original file | - |
| article xml uploaded. | 13 February 2017 11:13 CET | Original file | https://www.mdpi.com/2071-1050/9/2/261/xml |
| article pdf uploaded. | 13 February 2017 11:13 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/261/pdf |
