| article html file updated | 7 February 2020 14:37 CET | Update | https://www.mdpi.com/2071-1050/8/9/912 |
| article html file updated | 5 May 2019 04:46 CEST | Update | - |
| article html file updated | 27 September 2016 05:22 CEST | Update | - |
| article html file updated | 8 September 2016 09:00 CEST | Original file | - |
| article xml uploaded. | 8 September 2016 08:58 CEST | Update | https://www.mdpi.com/2071-1050/8/9/912/xml |
| article xml uploaded. | 8 September 2016 08:58 CEST | Original file | - |
| article pdf uploaded. | 8 September 2016 08:58 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/9/912/pdf |
