| article html file updated | 30 August 2025 01:30 CEST | Update | https://www.mdpi.com/2218-2004/5/4/40 |
| article html file updated | 16 July 2022 06:58 CEST | Update | N/A |
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| article xml uploaded. | 24 October 2017 06:13 CEST | Update | https://www.mdpi.com/2218-2004/5/4/40/xml |
| article pdf uploaded. | 24 October 2017 06:13 CEST | Updated version of record | https://www.mdpi.com/2218-2004/5/4/40/pdf |
| article html file updated | 23 October 2017 13:43 CEST | Original file | N/A |
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| article pdf uploaded. | 23 October 2017 13:42 CEST | Version of Record | https://www.mdpi.com/2218-2004/5/4/40/pdf-vor |
