| article html file updated | 8 February 2020 03:16 CET | Update | https://www.mdpi.com/2079-4991/7/4/81 |
| article html file updated | 24 September 2019 06:04 CEST | Update | - |
| article html file updated | 4 May 2019 02:48 CEST | Update | - |
| article html file updated | 11 April 2017 04:37 CEST | Original file | - |
| article xml uploaded. | 11 April 2017 04:35 CEST | Original file | https://www.mdpi.com/2079-4991/7/4/81/xml |
| article pdf uploaded. | 11 April 2017 04:35 CEST | Updated version of record | https://www.mdpi.com/2079-4991/7/4/81/pdf |
| article pdf uploaded. | 10 April 2017 13:46 CEST | Version of Record | https://www.mdpi.com/2079-4991/7/4/81/pdf-vor |
