| article html file updated | 31 August 2025 06:31 CEST | Update | https://www.mdpi.com/2304-6732/6/4/127 |
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| article pdf uploaded. | 13 December 2019 13:37 CET | Version of Record | https://www.mdpi.com/2304-6732/6/4/127/pdf |
| article xml uploaded. | 13 December 2019 13:37 CET | Update | https://www.mdpi.com/2304-6732/6/4/127/xml |
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