| article html file updated | 7 February 2020 10:33 CET | Update | https://www.mdpi.com/1999-4915/8/6/175 |
| article html file updated | 5 May 2019 12:11 CEST | Update | - |
| article html file updated | 27 March 2019 08:11 CET | Update | - |
| article html file updated | 29 June 2016 10:21 CEST | Update | - |
| article html file updated | 22 June 2016 10:33 CEST | Original file | - |
| article xml uploaded. | 22 June 2016 10:32 CEST | Update | https://www.mdpi.com/1999-4915/8/6/175/xml |
| article pdf uploaded. | 22 June 2016 10:32 CEST | Version of Record | https://www.mdpi.com/1999-4915/8/6/175/pdf |
