| article html file updated | 14 August 2026 19:27 CEST | Update | https://www.mdpi.com/2075-4701/7/12/520 |
| article html file updated | 8 February 2020 22:02 CET | Update | N/A |
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| article html file updated | 24 November 2017 04:45 CET | Original file | N/A |
| article xml uploaded. | 24 November 2017 04:43 CET | Update | https://www.mdpi.com/2075-4701/7/12/520/xml |
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| article pdf uploaded. | 24 November 2017 04:43 CET | Updated version of record | https://www.mdpi.com/2075-4701/7/12/520/pdf |
| article pdf uploaded. | 23 November 2017 12:23 CET | Version of Record | https://www.mdpi.com/2075-4701/7/12/520/pdf-vor |
