| article html file updated | 31 August 2025 07:10 CEST | Update | https://www.mdpi.com/1422-0067/21/1/89 |
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| article pdf uploaded. | 21 December 2019 10:14 CET | Version of Record | https://www.mdpi.com/1422-0067/21/1/89/pdf |
| article xml uploaded. | 21 December 2019 10:14 CET | Update | https://www.mdpi.com/1422-0067/21/1/89/xml |
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