| article html file updated | 8 February 2020 08:14 CET | Update | https://www.mdpi.com/2073-4441/9/6/428 |
| article html file updated | 25 September 2019 08:06 CEST | Update | - |
| article html file updated | 3 May 2019 17:34 CEST | Update | - |
| article html file updated | 29 June 2017 12:17 CEST | Update | - |
| article html file updated | 13 June 2017 15:38 CEST | Original file | - |
| article xml uploaded. | 13 June 2017 15:37 CEST | Original file | https://www.mdpi.com/2073-4441/9/6/428/xml |
| article pdf uploaded. | 13 June 2017 15:37 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/6/428/pdf |
