| article html file updated | 7 February 2020 09:34 CET | Update | https://www.mdpi.com/2072-6651/8/6/168 |
| article html file updated | 5 May 2019 14:05 CEST | Update | - |
| article html file updated | 27 March 2019 06:19 CET | Update | - |
| article html file updated | 29 June 2016 11:45 CEST | Update | - |
| article html file updated | 1 June 2016 11:05 CEST | Original file | - |
| article xml uploaded. | 1 June 2016 11:03 CEST | Original file | https://www.mdpi.com/2072-6651/8/6/168/xml |
| article pdf uploaded. | 1 June 2016 11:03 CEST | Version of Record | https://www.mdpi.com/2072-6651/8/6/168/pdf |
