| article html file updated | 30 August 2025 13:46 CEST | Update | https://www.mdpi.com/2218-1989/9/4/69 |
| article html file updated | 21 August 2025 20:35 CEST | Update | N/A |
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| article html file updated | 21 April 2019 08:55 CEST | Original file | N/A |
| article pdf uploaded. | 21 April 2019 08:54 CEST | Updated version of record | https://www.mdpi.com/2218-1989/9/4/69/pdf |
| article xml uploaded. | 21 April 2019 08:54 CEST | Update | https://www.mdpi.com/2218-1989/9/4/69/xml |
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| article pdf uploaded. | 8 April 2019 15:41 CEST | Version of Record | https://www.mdpi.com/2218-1989/9/4/69/pdf-vor |
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