| article html file updated | 14 August 2026 16:58 CEST | Update | https://www.mdpi.com/2073-4441/9/9/636 |
| article html file updated | 8 February 2020 14:23 CET | Update | N/A |
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| article xml uploaded. | 25 August 2017 03:25 CEST | Original file | https://www.mdpi.com/2073-4441/9/9/636/xml |
| article pdf uploaded. | 25 August 2017 03:25 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/9/636/pdf |
| article pdf uploaded. | 24 August 2017 14:01 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/9/636/pdf-vor |
