| article html file updated | 7 February 2020 02:07 CET | Update | https://www.mdpi.com/1999-4907/6/12/4384 |
| article html file updated | 6 May 2019 05:12 CEST | Update | - |
| article html file updated | 26 March 2019 16:17 CET | Original file | - |
| article pdf uploaded. | 11 December 2015 10:09 CET | Version of Record | https://www.mdpi.com/1999-4907/6/12/4384/pdf |
| article xml uploaded. | 11 December 2015 10:09 CET | Original file | https://www.mdpi.com/1999-4907/6/12/4384/xml |
