| article html file updated | 8 February 2020 15:04 CET | Update | https://www.mdpi.com/2073-4441/9/9/657 |
| article html file updated | 26 September 2019 21:25 CEST | Update | - |
| article html file updated | 3 May 2019 04:02 CEST | Update | - |
| article html file updated | 30 September 2017 11:03 CEST | Update | - |
| article html file updated | 1 September 2017 14:35 CEST | Original file | - |
| article xml uploaded. | 1 September 2017 14:33 CEST | Original file | https://www.mdpi.com/2073-4441/9/9/657/xml |
| article pdf uploaded. | 1 September 2017 14:33 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/9/657/pdf |
