| article html file updated | 8 February 2020 08:18 CET | Update | https://www.mdpi.com/2072-6643/9/6/608 |
| article html file updated | 3 May 2019 17:27 CEST | Update | - |
| article html file updated | 29 June 2017 11:47 CEST | Update | - |
| article html file updated | 15 June 2017 10:17 CEST | Original file | - |
| article xml uploaded. | 15 June 2017 10:16 CEST | Original file | https://www.mdpi.com/2072-6643/9/6/608/xml |
| article pdf uploaded. | 15 June 2017 10:16 CEST | Updated version of record | https://www.mdpi.com/2072-6643/9/6/608/pdf |
| article pdf uploaded. | 14 June 2017 14:55 CEST | Version of Record | https://www.mdpi.com/2072-6643/9/6/608/pdf-vor |
