| article html file updated | 30 August 2025 01:21 CEST | Update | https://www.mdpi.com/2073-445X/6/4/67 |
| article html file updated | 16 July 2022 06:40 CEST | Update | - |
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| article html file updated | 9 October 2017 11:53 CEST | Original file | - |
| article xml uploaded. | 9 October 2017 11:52 CEST | Update | https://www.mdpi.com/2073-445X/6/4/67/xml |
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| article pdf uploaded. | 9 October 2017 11:52 CEST | Updated version of record | https://www.mdpi.com/2073-445X/6/4/67/pdf |
| article pdf uploaded. | 4 October 2017 12:23 CEST | Version of Record | https://www.mdpi.com/2073-445X/6/4/67/pdf-vor |
