| article html file updated | 7 February 2020 13:47 CET | Update | https://www.mdpi.com/2071-1050/8/9/837 |
| article html file updated | 5 May 2019 06:15 CEST | Update | - |
| article html file updated | 27 March 2019 14:35 CET | Update | - |
| article html file updated | 27 September 2016 05:05 CEST | Update | - |
| article html file updated | 24 August 2016 08:44 CEST | Original file | - |
| article xml uploaded. | 24 August 2016 08:43 CEST | Original file | https://www.mdpi.com/2071-1050/8/9/837/xml |
| article pdf uploaded. | 24 August 2016 08:43 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/9/837/pdf |
