| article html file updated | 30 August 2025 05:06 CEST | Update | https://www.mdpi.com/1422-0067/19/7/1989 |
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| article pdf uploaded. | 7 July 2018 13:21 CEST | Version of Record | https://www.mdpi.com/1422-0067/19/7/1989/pdf |
| article xml uploaded. | 7 July 2018 13:21 CEST | Update | https://www.mdpi.com/1422-0067/19/7/1989/xml |
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