| article html file updated | 8 February 2020 04:00 CET | Update | https://www.mdpi.com/2072-6643/9/4/406 |
| article html file updated | 24 September 2019 10:14 CEST | Update | - |
| article html file updated | 4 May 2019 01:25 CEST | Update | - |
| article html file updated | 28 April 2017 11:53 CEST | Update | - |
| article html file updated | 21 April 2017 02:42 CEST | Original file | - |
| article xml uploaded. | 21 April 2017 02:41 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/406/xml |
| article pdf uploaded. | 21 April 2017 02:41 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/406/pdf |
