| article html file updated | 7 February 2020 16:31 CET | Update | https://www.mdpi.com/2075-471X/5/4/39 |
| article html file updated | 5 May 2019 01:20 CEST | Update | - |
| article html file updated | 18 October 2016 09:22 CEST | Original file | - |
| article xml uploaded. | 18 October 2016 09:21 CEST | Original file | https://www.mdpi.com/2075-471X/5/4/39/xml |
| article pdf uploaded. | 18 October 2016 09:21 CEST | Version of Record | https://www.mdpi.com/2075-471X/5/4/39/pdf |
