| article html file updated | 16 August 2026 20:16 CEST | Update | https://www.mdpi.com/2077-0472/9/12/257 |
| article html file updated | 31 August 2025 05:43 CEST | Update | N/A |
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| article html file updated | 19 December 2019 04:39 CET | Original file | N/A |
| article pdf uploaded. | 19 December 2019 04:37 CET | Updated version of record | https://www.mdpi.com/2077-0472/9/12/257/pdf |
| article xml uploaded. | 19 December 2019 04:37 CET | Update | https://www.mdpi.com/2077-0472/9/12/257/xml |
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| article pdf uploaded. | 4 December 2019 15:00 CET | Version of Record | https://www.mdpi.com/2077-0472/9/12/257/pdf-vor |
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