| article html file updated | 8 February 2020 07:29 CET | Update | https://www.mdpi.com/2072-6643/9/6/575 |
| article html file updated | 25 September 2019 04:18 CEST | Update | - |
| article html file updated | 3 May 2019 18:56 CEST | Update | - |
| article html file updated | 29 June 2017 11:43 CEST | Update | - |
| article html file updated | 5 June 2017 11:46 CEST | Original file | - |
| article xml uploaded. | 5 June 2017 11:45 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/575/xml |
| article pdf uploaded. | 5 June 2017 11:45 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/575/pdf |
