| article html file updated | 24 December 2025 13:44 CET | Update | https://www.mdpi.com/2223-7747/2/4/615 |
| article html file updated | 28 September 2025 19:23 CEST | Update | N/A |
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| article html file updated | 17 June 2015 13:55 CEST | Original file | N/A |
| article pdf uploaded. | 15 October 2013 16:20 CEST | Version of Record | https://www.mdpi.com/2223-7747/2/4/615/pdf |
