| article html file updated | 24 December 2025 15:05 CET | Update | https://www.mdpi.com/2311-5521/4/2/104 |
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| article pdf uploaded. | 3 June 2019 12:42 CEST | Version of Record | https://www.mdpi.com/2311-5521/4/2/104/pdf |
| article xml uploaded. | 3 June 2019 12:42 CEST | Update | https://www.mdpi.com/2311-5521/4/2/104/xml |
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