| article html file updated | 8 February 2020 04:14 CET | Update | https://www.mdpi.com/2073-4441/9/4/298 |
| article html file updated | 24 September 2019 11:32 CEST | Update | - |
| article html file updated | 4 May 2019 01:00 CEST | Update | - |
| article html file updated | 28 April 2017 11:32 CEST | Update | - |
| article html file updated | 23 April 2017 12:53 CEST | Original file | - |
| article xml uploaded. | 23 April 2017 12:51 CEST | Original file | https://www.mdpi.com/2073-4441/9/4/298/xml |
| article pdf uploaded. | 23 April 2017 12:51 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/298/pdf |
