| article html file updated | 7 February 2020 01:46 CET | Update | https://www.mdpi.com/2073-4441/7/12/6662 |
| article html file updated | 6 May 2019 05:55 CEST | Update | - |
| article html file updated | 26 March 2019 15:45 CET | Original file | - |
| article pdf uploaded. | 4 December 2015 10:08 CET | Version of Record | https://www.mdpi.com/2073-4441/7/12/6662/pdf |
| article xml uploaded. | 4 December 2015 10:08 CET | Original file | https://www.mdpi.com/2073-4441/7/12/6662/xml |
