| article html file updated | 8 February 2020 04:01 CET | Update | https://www.mdpi.com/2072-6643/9/4/409 |
| article html file updated | 24 September 2019 10:16 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 | 20 April 2017 14:07 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 14:06 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/409/xml |
| article pdf uploaded. | 20 April 2017 14:06 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/409/pdf |
