| article html file updated | 7 February 2020 02:06 CET | Update | https://www.mdpi.com/2073-4441/7/12/6671 |
| article html file updated | 6 May 2019 05:15 CEST | Update | - |
| article html file updated | 26 March 2019 16:15 CET | Original file | - |
| article pdf uploaded. | 11 December 2015 10:07 CET | Version of Record | https://www.mdpi.com/2073-4441/7/12/6671/pdf |
| article xml uploaded. | 11 December 2015 10:07 CET | Original file | https://www.mdpi.com/2073-4441/7/12/6671/xml |
