| article html file updated | 30 August 2025 02:21 CEST | Update | https://www.mdpi.com/1996-1073/11/2/261 |
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| article xml uploaded. | 23 January 2018 17:21 CET | Update | https://www.mdpi.com/1996-1073/11/2/261/xml |
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| article pdf uploaded. | 23 January 2018 17:21 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/261/pdf |
