| article html file updated | 8 February 2020 07:27 CET | Update | https://www.mdpi.com/2073-4441/9/6/400 |
| article html file updated | 25 September 2019 04:09 CEST | Update | - |
| article html file updated | 3 May 2019 19:00 CEST | Update | - |
| article html file updated | 29 June 2017 12:12 CEST | Update | - |
| article html file updated | 4 June 2017 11:44 CEST | Original file | - |
| article xml uploaded. | 4 June 2017 11:43 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/400/xml |
| article pdf uploaded. | 4 June 2017 11:43 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/400/pdf |
