| article html file updated | 13 August 2026 00:15 CEST | Update | https://www.mdpi.com/2304-8158/3/2/304 |
| article html file updated | 6 February 2020 09:07 CET | Update | N/A |
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| article pdf uploaded. | 8 May 2014 14:17 CEST | Version of Record | https://www.mdpi.com/2304-8158/3/2/304/pdf |
