| article html file updated | 8 February 2020 08:02 CET | Update | https://www.mdpi.com/2073-4352/7/6/171 |
| article html file updated | 25 September 2019 07:04 CEST | Update | - |
| article html file updated | 3 May 2019 17:56 CEST | Update | - |
| article html file updated | 30 June 2017 11:26 CEST | Update | - |
| article html file updated | 11 June 2017 09:50 CEST | Original file | - |
| article xml uploaded. | 11 June 2017 09:49 CEST | Original file | https://www.mdpi.com/2073-4352/7/6/171/xml |
| article pdf uploaded. | 11 June 2017 09:49 CEST | Version of Record | https://www.mdpi.com/2073-4352/7/6/171/pdf |
