| article html file updated | 31 August 2025 05:42 CEST | Update | https://www.mdpi.com/2218-1997/5/12/223 |
| article html file updated | 19 July 2022 22:32 CEST | Update | - |
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| article html file updated | 9 December 2019 13:47 CET | Original file | - |
| article pdf uploaded. | 9 December 2019 13:46 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/12/223/pdf |
| article xml uploaded. | 9 December 2019 13:46 CET | Update | https://www.mdpi.com/2218-1997/5/12/223/xml |
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| article pdf uploaded. | 4 December 2019 13:13 CET | Version of Record | https://www.mdpi.com/2218-1997/5/12/223/pdf-vor |
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