| article html file updated | 29 August 2025 21:05 CEST | Update | https://www.mdpi.com/2073-4433/5/2/420 |
| article html file updated | 15 July 2022 23:06 CEST | Update | - |
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| article xml file uploaded | 3 July 2014 08:12 CEST | Update | https://www.mdpi.com/2073-4433/5/2/420/xml |
| article html file updated | 3 July 2014 06:29 CEST | Original file | - |
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| article pdf uploaded. | 4 June 2014 08:54 CEST | Version of Record | https://www.mdpi.com/2073-4433/5/2/420/pdf |
