| article html file updated | 9 February 2020 00:20 CET | Update | https://www.mdpi.com/2075-471X/6/4/32 |
| article html file updated | 2 May 2019 08:01 CEST | Update | - |
| article html file updated | 18 April 2019 05:50 CEST | Update | - |
| article html file updated | 18 December 2017 11:33 CET | Original file | - |
| article xml uploaded. | 18 December 2017 11:32 CET | Original file | https://www.mdpi.com/2075-471X/6/4/32/xml |
| article pdf uploaded. | 18 December 2017 11:32 CET | Updated version of record | https://www.mdpi.com/2075-471X/6/4/32/pdf |
| article pdf uploaded. | 16 December 2017 12:35 CET | Version of Record | https://www.mdpi.com/2075-471X/6/4/32/pdf-vor |
