| article html file updated | 8 February 2020 09:43 CET | Update | https://www.mdpi.com/1999-4915/9/7/168 |
| article html file updated | 25 September 2019 16:08 CEST | Update | - |
| article html file updated | 3 May 2019 14:45 CEST | Update | - |
| article html file updated | 2 August 2017 06:21 CEST | Update | - |
| article html file updated | 30 June 2017 12:52 CEST | Original file | - |
| article xml uploaded. | 30 June 2017 12:51 CEST | Original file | https://www.mdpi.com/1999-4915/9/7/168/xml |
| article pdf uploaded. | 30 June 2017 12:51 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/7/168/pdf |
