| article html file updated | 8 February 2020 04:12 CET | Update | https://www.mdpi.com/2072-6643/9/4/419 |
| article html file updated | 24 September 2019 11:21 CEST | Update | - |
| article html file updated | 4 May 2019 01:03 CEST | Update | - |
| article html file updated | 28 April 2017 11:54 CEST | Update | - |
| article html file updated | 23 April 2017 09:02 CEST | Original file | - |
| article xml uploaded. | 23 April 2017 09:01 CEST | Original file | https://www.mdpi.com/2072-6643/9/4/419/xml |
| article pdf uploaded. | 23 April 2017 09:01 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/4/419/pdf |
