| article html file updated | 30 August 2025 20:19 CEST | Update | https://www.mdpi.com/2079-9721/7/2/40 |
| article html file updated | 19 July 2022 19:10 CEST | Update | N/A |
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| article html file updated | 24 June 2019 11:55 CEST | Original file | N/A |
| article pdf uploaded. | 24 June 2019 11:53 CEST | Updated version of record | https://www.mdpi.com/2079-9721/7/2/40/pdf |
| article xml uploaded. | 24 June 2019 11:53 CEST | Update | https://www.mdpi.com/2079-9721/7/2/40/xml |
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| article pdf uploaded. | 27 May 2019 14:14 CEST | Version of Record | https://www.mdpi.com/2079-9721/7/2/40/pdf-vor |
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