| article html file updated | 30 August 2025 13:40 CEST | Update | https://www.mdpi.com/2223-7747/8/4/89 |
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| article supplementary file uploaded. | 4 April 2019 12:21 CEST | - | https://www.mdpi.com/2223-7747/8/4/89#supplementary |
| article pdf uploaded. | 4 April 2019 12:21 CEST | Version of Record | https://www.mdpi.com/2223-7747/8/4/89/pdf |
| article xml uploaded. | 4 April 2019 12:21 CEST | Update | https://www.mdpi.com/2223-7747/8/4/89/xml |
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