| article html file updated | 7 February 2020 01:26 CET | Update | https://www.mdpi.com/2073-4441/7/12/6652 |
| article html file updated | 6 May 2019 06:37 CEST | Update | - |
| article html file updated | 26 March 2019 15:09 CET | Original file | - |
| article pdf uploaded. | 26 November 2015 16:07 CET | Version of Record | https://www.mdpi.com/2073-4441/7/12/6652/pdf |
| article xml uploaded. | 26 November 2015 16:07 CET | Original file | https://www.mdpi.com/2073-4441/7/12/6652/xml |
