| article html file updated | 7 February 2020 01:54 CET | Update | https://www.mdpi.com/1999-4915/7/12/2947 |
| article html file updated | 6 May 2019 05:41 CEST | Update | - |
| article html file updated | 26 March 2019 15:56 CET | Original file | - |
| article pdf uploaded. | 7 December 2015 15:15 CET | Version of Record | https://www.mdpi.com/1999-4915/7/12/2947/pdf |
| article xml uploaded. | 7 December 2015 15:15 CET | Original file | https://www.mdpi.com/1999-4915/7/12/2947/xml |
