| article html file updated | 12 August 2026 22:48 CEST | Update | https://www.mdpi.com/2226-4787/2/1/98 |
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| article html file updated | 19 August 2015 22:21 CEST | Original file | N/A |
| article pdf uploaded. | 4 March 2014 09:59 CET | Version of Record | https://www.mdpi.com/2226-4787/2/1/98/pdf |
