| article html file updated | 8 February 2020 04:09 CET | Update | https://www.mdpi.com/2072-6643/9/4/417 |
| article html file updated | 24 September 2019 11:03 CEST | Update | - |
| article html file updated | 4 May 2019 01:09 CEST | Update | - |
| article html file updated | 28 April 2017 11:54 CEST | Update | - |
| article html file updated | 22 April 2017 09:17 CEST | Original file | - |
| article xml uploaded. | 22 April 2017 09:16 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/417/xml |
| article pdf uploaded. | 22 April 2017 09:16 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/417/pdf |
