| article html file updated | 7 February 2020 04:42 CET | Update | https://www.mdpi.com/2071-1050/8/2/176 |
| article html file updated | 6 May 2019 00:01 CEST | Update | - |
| article html file updated | 26 March 2019 21:00 CET | Original file | - |
| article pdf uploaded. | 18 February 2016 09:26 CET | Version of Record | https://www.mdpi.com/2071-1050/8/2/176/pdf |
| article xml uploaded. | 18 February 2016 09:26 CET | Original file | https://www.mdpi.com/2071-1050/8/2/176/xml |
