| article html file updated | 8 February 2020 23:52 CET | Update | https://www.mdpi.com/2075-471X/6/4/29 |
| article html file updated | 2 May 2019 09:01 CEST | Update | - |
| article html file updated | 18 April 2019 06:46 CEST | Update | - |
| article html file updated | 14 December 2017 22:23 CET | Original file | - |
| article xml uploaded. | 14 December 2017 22:22 CET | Original file | https://www.mdpi.com/2075-471X/6/4/29/xml |
| article pdf uploaded. | 14 December 2017 22:22 CET | Updated version of record | https://www.mdpi.com/2075-471X/6/4/29/pdf |
| article pdf uploaded. | 12 December 2017 11:47 CET | Version of Record | https://www.mdpi.com/2075-471X/6/4/29/pdf-vor |
