| article html file updated | 8 February 2020 07:02 CET | Update | https://www.mdpi.com/2071-1050/9/6/913 |
| article html file updated | 25 September 2019 02:01 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:49 CEST | Update | N/A |
| article html file updated | 28 June 2017 14:34 CEST | Update | N/A |
| article html file updated | 30 May 2017 13:58 CEST | Original file | N/A |
| article xml uploaded. | 30 May 2017 13:57 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/913/xml |
| article pdf uploaded. | 30 May 2017 13:57 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/913/pdf |
