| article html file updated | 8 February 2020 08:46 CET | Update | https://www.mdpi.com/2072-6643/9/6/631 |
| article html file updated | 25 September 2019 10:58 CEST | Update | - |
| article html file updated | 3 May 2019 16:32 CEST | Update | - |
| article html file updated | 29 June 2017 11:48 CEST | Update | - |
| article html file updated | 20 June 2017 12:20 CEST | Original file | - |
| article xml uploaded. | 20 June 2017 12:19 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/631/xml |
| article pdf uploaded. | 20 June 2017 12:19 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/631/pdf |
