| article html file updated | 7 February 2020 14:36 CET | Update | https://www.mdpi.com/2071-1050/8/9/904 |
| article html file updated | 22 September 2019 00:32 CEST | Update | - |
| article html file updated | 5 May 2019 04:48 CEST | Update | - |
| article html file updated | 27 September 2016 05:21 CEST | Update | - |
| article html file updated | 7 September 2016 12:14 CEST | Original file | - |
| article xml uploaded. | 7 September 2016 12:13 CEST | Original file | https://www.mdpi.com/2071-1050/8/9/904/xml |
| article pdf uploaded. | 7 September 2016 12:13 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/9/904/pdf |
