| article html file updated | 12 August 2026 22:06 CEST | Update | https://www.mdpi.com/2073-4441/6/2/213 |
| article html file updated | 6 February 2020 06:57 CET | Update | N/A |
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| article pdf uploaded. | 27 January 2014 10:46 CET | Version of Record | https://www.mdpi.com/2073-4441/6/2/213/pdf |
