| article html file updated | 31 August 2025 07:22 CEST | Update | https://www.mdpi.com/1422-0067/21/1/135 |
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| article html file updated | 24 December 2019 12:40 CET | Original file | - |
| article pdf uploaded. | 24 December 2019 12:39 CET | Version of Record | https://www.mdpi.com/1422-0067/21/1/135/pdf |
| article xml uploaded. | 24 December 2019 12:39 CET | Update | https://www.mdpi.com/1422-0067/21/1/135/xml |
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