| article html file updated | 8 February 2020 10:04 CET | Update | https://www.mdpi.com/1999-4915/9/7/173 |
| article html file updated | 25 September 2019 18:06 CEST | Update | - |
| article html file updated | 3 May 2019 14:05 CEST | Update | - |
| article html file updated | 2 August 2017 06:22 CEST | Update | - |
| article html file updated | 4 July 2017 15:24 CEST | Original file | - |
| article xml uploaded. | 4 July 2017 15:23 CEST | Original file | https://www.mdpi.com/1999-4915/9/7/173/xml |
| article pdf uploaded. | 4 July 2017 15:23 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/7/173/pdf |
