| article html file updated | 30 August 2025 21:39 CEST | Update | https://www.mdpi.com/2304-8158/8/7/227 |
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| article pdf uploaded. | 26 June 2019 13:29 CEST | Version of Record | https://www.mdpi.com/2304-8158/8/7/227/pdf |
| article xml uploaded. | 26 June 2019 13:29 CEST | Update | https://www.mdpi.com/2304-8158/8/7/227/xml |
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