| article html file updated | 31 August 2025 09:05 CEST | Update | https://www.mdpi.com/1424-2818/12/1/31 |
| article html file updated | 20 July 2022 17:37 CEST | Update | - |
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| article pdf uploaded. | 22 January 2020 11:34 CET | Updated version of record | https://www.mdpi.com/1424-2818/12/1/31/pdf |
| article xml uploaded. | 22 January 2020 11:34 CET | Update | https://www.mdpi.com/1424-2818/12/1/31/xml |
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| article pdf uploaded. | 15 January 2020 17:11 CET | Version of Record | https://www.mdpi.com/1424-2818/12/1/31/pdf-vor |
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