| article html file updated | 15 August 2026 21:56 CEST | Update | https://www.mdpi.com/1999-4893/12/4/77 |
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| article pdf uploaded. | 17 April 2019 11:31 CEST | Updated version of record | https://www.mdpi.com/1999-4893/12/4/77/pdf |
| article xml uploaded. | 17 April 2019 11:31 CEST | Update | https://www.mdpi.com/1999-4893/12/4/77/xml |
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