| article html file updated | 7 February 2020 01:39 CET | Update | https://www.mdpi.com/2073-4352/5/4/634 |
| article html file updated | 6 May 2019 06:09 CEST | Update | - |
| article html file updated | 26 March 2019 15:32 CET | Original file | - |
| article pdf uploaded. | 2 December 2015 14:21 CET | Version of Record | https://www.mdpi.com/2073-4352/5/4/634/pdf |
| article xml uploaded. | 2 December 2015 14:21 CET | Original file | https://www.mdpi.com/2073-4352/5/4/634/xml |
