| article html file updated | 7 February 2020 10:18 CET | Update | https://www.mdpi.com/2071-1050/8/6/559 |
| article html file updated | 5 May 2019 12:42 CEST | Update | - |
| article html file updated | 27 March 2019 07:43 CET | Update | - |
| article html file updated | 29 June 2016 05:34 CEST | Update | - |
| article html file updated | 16 June 2016 15:42 CEST | Original file | - |
| article xml uploaded. | 16 June 2016 15:40 CEST | Original file | https://www.mdpi.com/2071-1050/8/6/559/xml |
| article pdf uploaded. | 16 June 2016 15:40 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/6/559/pdf |
