| article html file updated | 7 February 2020 01:30 CET | Update | https://www.mdpi.com/2073-4441/7/12/6658 |
| article html file updated | 6 May 2019 06:28 CEST | Update | - |
| article html file updated | 26 March 2019 15:16 CET | Original file | - |
| article pdf uploaded. | 30 November 2015 12:04 CET | Version of Record | https://www.mdpi.com/2073-4441/7/12/6658/pdf |
| article xml uploaded. | 30 November 2015 12:04 CET | Original file | https://www.mdpi.com/2073-4441/7/12/6658/xml |
