| article html file updated | 8 February 2020 07:33 CET | Update | https://www.mdpi.com/2072-6643/9/6/577 |
| article html file updated | 25 September 2019 04:38 CEST | Update | - |
| article html file updated | 3 May 2019 18:49 CEST | Update | - |
| article html file updated | 29 June 2017 11:43 CEST | Update | - |
| article html file updated | 6 June 2017 14:28 CEST | Original file | - |
| article xml uploaded. | 6 June 2017 14:26 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/577/xml |
| article pdf uploaded. | 6 June 2017 14:26 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/577/pdf |
