| article html file updated | 7 February 2020 02:13 CET | Update | https://www.mdpi.com/2073-4433/6/12/1837 |
| article html file updated | 6 May 2019 05:00 CEST | Update | - |
| article html file updated | 26 March 2019 16:26 CET | Original file | - |
| article pdf uploaded. | 15 December 2015 15:21 CET | Version of Record | https://www.mdpi.com/2073-4433/6/12/1837/pdf |
| article xml uploaded. | 15 December 2015 15:21 CET | Original file | https://www.mdpi.com/2073-4433/6/12/1837/xml |
