| article html file updated | 8 February 2020 18:45 CET | Update | https://www.mdpi.com/2073-4409/6/4/35 |
| article html file updated | 27 September 2019 20:12 CEST | Update | - |
| article html file updated | 2 May 2019 20:35 CEST | Update | - |
| article html file updated | 2 January 2018 09:34 CET | Update | - |
| article html file updated | 18 October 2017 11:52 CEST | Original file | - |
| article xml uploaded. | 18 October 2017 11:51 CEST | Original file | https://www.mdpi.com/2073-4409/6/4/35/xml |
| article pdf uploaded. | 18 October 2017 11:51 CEST | Version of Record | https://www.mdpi.com/2073-4409/6/4/35/pdf |
