| article html file updated | 8 February 2020 11:01 CET | Update | https://www.mdpi.com/2076-0787/6/3/48 |
| article html file updated | 3 May 2019 12:20 CEST | Update | - |
| article html file updated | 14 July 2017 13:51 CEST | Update | - |
| article html file updated | 14 July 2017 13:50 CEST | Update | - |
| article html file updated | 14 July 2017 13:50 CEST | Original file | - |
| article xml uploaded. | 14 July 2017 13:48 CEST | Original file | https://www.mdpi.com/2076-0787/6/3/48/xml |
| article pdf uploaded. | 14 July 2017 13:48 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/3/48/pdf |
