| article html file updated | 7 February 2020 12:40 CET | Update | https://www.mdpi.com/2073-4344/6/8/117 |
| article html file updated | 5 May 2019 08:20 CEST | Update | - |
| article html file updated | 27 March 2019 12:06 CET | Update | - |
| article html file updated | 25 August 2016 11:43 CEST | Update | - |
| article html file updated | 1 August 2016 11:46 CEST | Original file | - |
| article xml uploaded. | 1 August 2016 11:45 CEST | Original file | https://www.mdpi.com/2073-4344/6/8/117/xml |
| article pdf uploaded. | 1 August 2016 11:45 CEST | Version of Record | https://www.mdpi.com/2073-4344/6/8/117/pdf |
