| article html file updated | 8 February 2020 22:34 CET | Update | https://www.mdpi.com/2075-5309/7/4/109 |
| article html file updated | 2 May 2019 11:57 CEST | Update | - |
| article html file updated | 18 April 2019 09:33 CEST | Update | - |
| article html file updated | 3 January 2018 09:00 CET | Update | - |
| article html file updated | 29 November 2017 12:10 CET | Original file | - |
| article xml uploaded. | 29 November 2017 12:09 CET | Update | https://www.mdpi.com/2075-5309/7/4/109/xml |
| article xml uploaded. | 29 November 2017 12:09 CET | Original file | - |
| article pdf uploaded. | 29 November 2017 12:09 CET | Version of Record | https://www.mdpi.com/2075-5309/7/4/109/pdf |
