| article html file updated | 8 February 2020 21:02 CET | Update | https://www.mdpi.com/2076-2607/5/4/71 |
| article html file updated | 2 May 2019 15:20 CEST | Update | - |
| article html file updated | 2 January 2018 20:38 CET | Update | - |
| article html file updated | 13 November 2017 11:13 CET | Original file | - |
| article xml uploaded. | 13 November 2017 11:12 CET | Original file | https://www.mdpi.com/2076-2607/5/4/71/xml |
| article pdf uploaded. | 13 November 2017 11:12 CET | Version of Record | https://www.mdpi.com/2076-2607/5/4/71/pdf |
