| article html file updated | 8 February 2020 03:58 CET | Update | https://www.mdpi.com/2073-4441/9/4/287 |
| article html file updated | 24 September 2019 10:00 CEST | Update | - |
| article html file updated | 4 May 2019 01:30 CEST | Update | - |
| article html file updated | 28 April 2017 11:30 CEST | Update | - |
| article html file updated | 20 April 2017 07:56 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 07:54 CEST | Original file | https://www.mdpi.com/2073-4441/9/4/287/xml |
| article pdf uploaded. | 20 April 2017 07:54 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/4/287/pdf |
