| article html file updated | 8 February 2020 08:02 CET | Update | https://www.mdpi.com/2073-4360/9/6/217 |
| article html file updated | 25 September 2019 07:07 CEST | Update | - |
| article html file updated | 3 May 2019 17:55 CEST | Update | - |
| article html file updated | 18 March 2019 05:57 CET | Update | - |
| article html file updated | 28 June 2017 14:22 CEST | Update | - |
| article html file updated | 11 June 2017 11:50 CEST | Original file | - |
| article xml uploaded. | 11 June 2017 11:48 CEST | Original file | https://www.mdpi.com/2073-4360/9/6/217/xml |
| article pdf uploaded. | 11 June 2017 11:48 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/6/217/pdf |
