| article html file updated | 8 February 2020 07:38 CET | Update | https://www.mdpi.com/2071-1050/9/6/973 |
| article html file updated | 25 September 2019 05:07 CEST | Update | - |
| article html file updated | 3 May 2019 18:40 CEST | Update | - |
| article html file updated | 28 June 2017 14:41 CEST | Update | - |
| article html file updated | 23 June 2017 04:35 CEST | Update | - |
| article xml uploaded. | 23 June 2017 04:34 CEST | Update | https://www.mdpi.com/2071-1050/9/6/973/xml |
| article pdf uploaded. | 23 June 2017 04:34 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/973/pdf |
| article html file updated | 7 June 2017 10:40 CEST | Original file | - |
| article pdf uploaded. | 7 June 2017 10:38 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/973/pdf-vor |
