| article html file updated | 9 February 2020 00:38 CET | Update | https://www.mdpi.com/2075-471X/6/4/33 |
| article html file updated | 29 September 2019 08:26 CEST | Update | - |
| article html file updated | 2 May 2019 07:22 CEST | Update | - |
| article html file updated | 18 April 2019 05:14 CEST | Update | - |
| article html file updated | 20 December 2017 09:04 CET | Original file | - |
| article xml uploaded. | 20 December 2017 09:03 CET | Original file | https://www.mdpi.com/2075-471X/6/4/33/xml |
| article pdf uploaded. | 20 December 2017 09:03 CET | Version of Record | https://www.mdpi.com/2075-471X/6/4/33/pdf |
