| article html file updated | 8 February 2020 07:04 CET | Update | https://www.mdpi.com/2071-1050/9/6/919 |
| article html file updated | 25 September 2019 02:13 CEST | Update | - |
| article html file updated | 3 May 2019 19:45 CEST | Update | - |
| article html file updated | 28 June 2017 14:35 CEST | Update | - |
| article html file updated | 2 June 2017 12:11 CEST | Original file | - |
| article xml uploaded. | 2 June 2017 12:10 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/919/xml |
| article pdf uploaded. | 2 June 2017 12:10 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/919/pdf |
| article pdf uploaded. | 31 May 2017 10:24 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/919/pdf-vor |
