| article html file updated | 8 February 2020 04:26 CET | Update | https://www.mdpi.com/2076-0787/6/2/25 |
| article html file updated | 4 May 2019 00:40 CEST | Update | - |
| article html file updated | 26 April 2017 14:42 CEST | Original file | - |
| article xml uploaded. | 26 April 2017 14:41 CEST | Original file | https://www.mdpi.com/2076-0787/6/2/25/xml |
| article pdf uploaded. | 26 April 2017 14:41 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/2/25/pdf |
