| article html file updated | 6 February 2020 00:32 CET | Update | https://www.mdpi.com/2071-1050/5/2/654 |
| article html file updated | 8 May 2019 08:28 CEST | Update | - |
| article html file updated | 20 March 2019 18:36 CET | Original file | - |
| article pdf uploaded. | 11 February 2013 14:33 CET | Version of Record | https://www.mdpi.com/2071-1050/5/2/654/pdf |
