| article html file updated | 8 February 2020 14:15 CET | Update | https://www.mdpi.com/2073-4352/7/9/256 |
| article html file updated | 26 September 2019 16:56 CEST | Update | - |
| article html file updated | 3 May 2019 05:34 CEST | Update | - |
| article html file updated | 30 September 2017 08:40 CEST | Update | - |
| article html file updated | 23 August 2017 13:05 CEST | Original file | - |
| article xml uploaded. | 23 August 2017 13:03 CEST | Original file | https://www.mdpi.com/2073-4352/7/9/256/xml |
| article pdf uploaded. | 23 August 2017 13:03 CEST | Version of Record | https://www.mdpi.com/2073-4352/7/9/256/pdf |
