| article html file updated | 8 February 2020 18:57 CET | Update | https://www.mdpi.com/2075-1680/6/4/27 |
| article html file updated | 2 May 2019 20:08 CEST | Update | N/A |
| article html file updated | 2 January 2018 13:22 CET | Update | N/A |
| article html file updated | 26 October 2017 12:26 CEST | Original file | N/A |
| article xml uploaded. | 26 October 2017 12:25 CEST | Original file | https://www.mdpi.com/2075-1680/6/4/27/xml |
| article pdf uploaded. | 26 October 2017 12:25 CEST | Updated version of record | https://www.mdpi.com/2075-1680/6/4/27/pdf |
| article pdf uploaded. | 20 October 2017 09:03 CEST | Version of Record | https://www.mdpi.com/2075-1680/6/4/27/pdf-vor |
