| article html file updated | 12 August 2026 23:44 CEST | Update | https://www.mdpi.com/2071-1050/6/4/2118 |
| article html file updated | 6 February 2020 08:36 CET | Update | N/A |
| article html file updated | 20 September 2019 07:24 CEST | Update | N/A |
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| article html file updated | 20 August 2015 03:20 CEST | Original file | N/A |
| article pdf uploaded. | 15 April 2014 12:16 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/4/2118/pdf |
