| article html file updated | 8 February 2020 06:37 CET | Update | https://www.mdpi.com/2071-1050/9/6/888 |
| article html file updated | 24 September 2019 23:55 CEST | Update | - |
| article html file updated | 3 May 2019 20:33 CEST | Update | - |
| article html file updated | 28 June 2017 14:31 CEST | Update | - |
| article html file updated | 24 May 2017 15:55 CEST | Original file | - |
| article xml uploaded. | 24 May 2017 15:54 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/888/xml |
| article pdf uploaded. | 24 May 2017 15:54 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/888/pdf |
