| article html file updated | 7 February 2020 01:22 CET | Update | https://www.mdpi.com/1999-4915/7/12/2922 |
| article html file updated | 6 May 2019 06:40 CEST | Update | - |
| article html file updated | 26 March 2019 15:06 CET | Original file | - |
| article pdf uploaded. | 25 November 2015 16:27 CET | Version of Record | https://www.mdpi.com/1999-4915/7/12/2922/pdf |
| article xml uploaded. | 25 November 2015 16:27 CET | Original file | https://www.mdpi.com/1999-4915/7/12/2922/xml |
