| article html file updated | 30 August 2025 20:36 CEST | Update | https://www.mdpi.com/2308-3425/6/2/21 |
| article html file updated | 19 July 2022 19:29 CEST | Update | N/A |
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| article html file updated | 21 October 2019 04:09 CEST | Update | N/A |
| article html file updated | 26 June 2019 04:13 CEST | Original file | N/A |
| article pdf uploaded. | 26 June 2019 04:11 CEST | Updated version of record | https://www.mdpi.com/2308-3425/6/2/21/pdf |
| article xml uploaded. | 26 June 2019 04:11 CEST | Update | https://www.mdpi.com/2308-3425/6/2/21/xml |
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| article pdf uploaded. | 1 June 2019 10:30 CEST | Version of Record | https://www.mdpi.com/2308-3425/6/2/21/pdf-vor |
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